Difference: DongHosLogHYDJETstudies (1 vs. 9)

Revision 92010-08-11 - DongHoMoon

 
META TOPICPARENT name="DongHosLog"
Changed:
<
<

Quarikonia Study

>
>

Quarkonia in Hydjet Study

 
Changed:
<
<

1. Motivation of Quarkonia (qqbar -> +mu -mu, J/psi, Upsilon family) Study at CMS (Fig. 1)

>
>

1. Quarkonia Generation with HYJET

Deleted:
<
<
- Quarkonia's step-wise suppression at high pt region is the one of most direct probes of QGP (Quark-gluon-plasma)

- J/Psi's suppression is already observed in SPS and RHIC.

- So, how about it in CMS ? (there could be more huge suppression or enhanced regeneration ?) and how about Upsilon ?

What is more benefits of CMS than other experiments ?

- Increased energy : 5.5 TeV? (PbPb? collision) - 30 times more huge than RHIC (200 GeV? : AuAu?)

- It can make plasma hotter, longer-lived than RHIC (it can be easy to dissolute the particles which has large binding energy)

- provide good circumstances to produce Quarkonia highly

- high luminosities : 5*10^26 cm^-2 s^-1 (increase events rate)

- high gluon density at low-x, (the almost particles of heavy-flavor quarks is made by gluon-gluon fusion)

- New possibility of Upsilon family (Y, Y', Y'')

2. Quarkonia Generation with HYJET

 

31X HYDJET production information (updated at 20090608)

* decache location : dcache:/pnfs/cmsaf.mit.edu/hibat/cms/users/davidlw/HYDJET_Minbias_4TeV_31X/gen/

* 100k production by Wei at CMSSW_3_1_X

Jpsi_pt_distribution

2nd HYDJET production information

* decache location : /pnfs/cmsaf.mit.edu/t2bat/cms/store/user/davidlw/HYDJET_GEN_X2_MB_4.0TeV/HYDJET_GEN_X2_MB_4.0TeV/545444c24aba01a433ce34e4c379212c/

* 100k production by Wei, including more quarkonia

Analysis of quarkonia with CMSSW at CMSSW_2_1_x

- use 'HydQuarkoniaAnalyzer.ccHydQuarkoniaAnalyzer.cc'

1) pT distributions of J/psis

- the flat around 5 -10 GeV?/c doesn't feed down. This unexpected effect seems to be caused by the cases that the mother is J/psis themselves, chi_cs and color octet state. It is neccessary to check generation situation.

Mothers of J/psi
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 20 21 21
J/psi (443) 3992 21 11  
B0(+-511) 3133(3096) 11 or 12 11  
B+(+-521) 3152(2927) 11 11  
Bs0(+-531) 885(884) 11 11  
B_c(+-541) 27(21) 11 11  
chi_1c(20443) 3848 11 11  
chi_2c(445) 407 11 11  
chi_0c(10441) 17 11 11  
Lambda_b0(+-5122) 618(577) 11 11  
Xi_b-(+-5132) 23(19) 11 11  
Xi_b0-(+-5132) 24(15) 11 11  
Omega_b-(5332) 1 11 11  
Cluster(91) 327 11 11 cluster fragmention (pQCD)
cc~(9900443) 3375 11 11 Color Octet system
cc~(9910441) 336 11 11 Color Octet system
cc~(9900441) 261 11 11 Color Octet system
Total J/psi 27985      

- pT distribution of Upsilon from 100k hydjet minbias event.

Mothers of Upsilon
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 34 21 21
Upsilon (553) 435 21 11  
Chi_0b (10551) 8 11 11  
Chi_1b (20553) 102 11 11  
Chi_2b (555) 81 11 11  
bb bar 1s (9900551) 32 11 11 Color Octet system
bb bar 3s (9900553) 364 11 11 Color Octet system
bb bar 3p (9910551) 5 11 11 Color Octet system
Cluster (91) 328 11 11 cluster fragmention (pQCD)
Total Upsilon 1084      

2) pT distributions of muons from Kaons, B meson and J/psis

3) Dimuon mass continuum with muon combination

- use 'MuonCombiAnalyzer.cc' - in order to look into clear signal, the study was done separately 0-1 GeV?/c^2, 2 - 4 GeV?/c^2, 0 - 10 GeV?/c^2.

Mass range 0 - 10 GeV?/c^2

Mass range 0 - 1 GeV?/c^2

Mass range 2 - 4 GeV?/c^2

-- DongHoMoon - 27 Apr 2009

META FILEATTACHMENT attachment="Fig01.jpg" attr="" comment="" date="1241010743" name="Fig01.jpg" path="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" size="47482" stream="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Jpsi_From_mother.png" attr="" comment="" date="1241617139" name="Jpsi_From_mother.png" path="C:\root\20090403_Hydjet\Jpsi_From_mother.png" size="25217" stream="C:\root\20090403_Hydjet\Jpsi_From_mother.png" user="Main.DongHoMoon" version="2"
META FILEATTACHMENT attachment="Muons_and_kaons_BtoJpsi.png" attr="" comment="" date="1241012423" name="Muons_and_kaons_BtoJpsi.png" path="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" size="19318" stream="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_10.png" attr="" comment="" date="1241018668" name="muon_combination_0_10.png" path="C:\root\20090403_Hydjet\muon_combination_0_10.png" size="14288" stream="C:\root\20090403_Hydjet\muon_combination_0_10.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_1_Gev.png" attr="" comment="" date="1241018753" name="muon_combination_0_1_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" size="17951" stream="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_2_4_Gev.png" attr="" comment="" date="1241023394" name="muon_combination_2_4_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" size="16272" stream="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="UpsilonFromMother2.png" attr="" comment="" date="1241642610" name="UpsilonFromMother2.png" path="C:\root\20090403_Hydjet\UpsilonFromMothers.png" size="15579" stream="C:\root\20090403_Hydjet\UpsilonFromMothers.png" user="Main.DongHoMoon" version="3"
META FILEATTACHMENT attachment="21X_Hydjet_Jpsi_pt.png" attr="" comment="" date="1244468516" name="21X_Hydjet_Jpsi_pt.png" path="21X_Hydjet_Jpsi_pt.png" size="16087" stream="21X_Hydjet_Jpsi_pt.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="31X_Hydjet_Jpsi_pt.png" attr="" comment="" date="1244468619" name="31X_Hydjet_Jpsi_pt.png" path="31X_Hydjet_Jpsi_pt.png" size="13864" stream="31X_Hydjet_Jpsi_pt.png" user="Main.DongHoMoon" version="1"

Revision 82009-06-08 - DongHoMoon

 
META TOPICPARENT name="DongHosLog"

Quarikonia Study

1. Motivation of Quarkonia (qqbar -> +mu -mu, J/psi, Upsilon family) Study at CMS (Fig. 1)

- Quarkonia's step-wise suppression at high pt region is the one of most direct probes of QGP (Quark-gluon-plasma)

- J/Psi's suppression is already observed in SPS and RHIC.

- So, how about it in CMS ? (there could be more huge suppression or enhanced regeneration ?) and how about Upsilon ?

What is more benefits of CMS than other experiments ?

- Increased energy : 5.5 TeV? (PbPb? collision) - 30 times more huge than RHIC (200 GeV? : AuAu?)

- It can make plasma hotter, longer-lived than RHIC (it can be easy to dissolute the particles which has large binding energy)

- provide good circumstances to produce Quarkonia highly

- high luminosities : 5*10^26 cm^-2 s^-1 (increase events rate)

- high gluon density at low-x, (the almost particles of heavy-flavor quarks is made by gluon-gluon fusion)

- New possibility of Upsilon family (Y, Y', Y'')

2. Quarkonia Generation with HYJET

Added:
>
>

31X HYDJET production information (updated at 20090608)

* decache location : dcache:/pnfs/cmsaf.mit.edu/hibat/cms/users/davidlw/HYDJET_Minbias_4TeV_31X/gen/

* 100k production by Wei at CMSSW_3_1_X

Jpsi_pt_distribution

 

2nd HYDJET production information

* decache location : /pnfs/cmsaf.mit.edu/t2bat/cms/store/user/davidlw/HYDJET_GEN_X2_MB_4.0TeV/HYDJET_GEN_X2_MB_4.0TeV/545444c24aba01a433ce34e4c379212c/

* 100k production by Wei, including more quarkonia

Analysis of quarkonia with CMSSW at CMSSW_2_1_x

Changed:
<
<
- use 'HydQuarkoniaAnalyzer.cc'
>
>
- use 'HydQuarkoniaAnalyzer.ccHydQuarkoniaAnalyzer.cc'
 

1) pT distributions of J/psis

- the flat around 5 -10 GeV?/c doesn't feed down. This unexpected effect seems to be caused by the cases that the mother is J/psis themselves, chi_cs and color octet state. It is neccessary to check generation situation.

Mothers of J/psi
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 20 21 21
J/psi (443) 3992 21 11  
B0(+-511) 3133(3096) 11 or 12 11  
B+(+-521) 3152(2927) 11 11  
Bs0(+-531) 885(884) 11 11  
B_c(+-541) 27(21) 11 11  
chi_1c(20443) 3848 11 11  
chi_2c(445) 407 11 11  
chi_0c(10441) 17 11 11  
Lambda_b0(+-5122) 618(577) 11 11  
Xi_b-(+-5132) 23(19) 11 11  
Xi_b0-(+-5132) 24(15) 11 11  
Omega_b-(5332) 1 11 11  
Cluster(91) 327 11 11 cluster fragmention (pQCD)
cc~(9900443) 3375 11 11 Color Octet system
cc~(9910441) 336 11 11 Color Octet system
cc~(9900441) 261 11 11 Color Octet system
Total J/psi 27985      

- pT distribution of Upsilon from 100k hydjet minbias event.

Mothers of Upsilon
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 34 21 21
Upsilon (553) 435 21 11  
Chi_0b (10551) 8 11 11  
Chi_1b (20553) 102 11 11  
Chi_2b (555) 81 11 11  
bb bar 1s (9900551) 32 11 11 Color Octet system
bb bar 3s (9900553) 364 11 11 Color Octet system
bb bar 3p (9910551) 5 11 11 Color Octet system
Cluster (91) 328 11 11 cluster fragmention (pQCD)
Total Upsilon 1084      

2) pT distributions of muons from Kaons, B meson and J/psis

3) Dimuon mass continuum with muon combination

- use 'MuonCombiAnalyzer.cc' - in order to look into clear signal, the study was done separately 0-1 GeV?/c^2, 2 - 4 GeV?/c^2, 0 - 10 GeV?/c^2.

Mass range 0 - 10 GeV?/c^2

Mass range 0 - 1 GeV?/c^2

Mass range 2 - 4 GeV?/c^2

-- DongHoMoon - 27 Apr 2009

META FILEATTACHMENT attachment="Fig01.jpg" attr="" comment="" date="1241010743" name="Fig01.jpg" path="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" size="47482" stream="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Jpsi_From_mother.png" attr="" comment="" date="1241617139" name="Jpsi_From_mother.png" path="C:\root\20090403_Hydjet\Jpsi_From_mother.png" size="25217" stream="C:\root\20090403_Hydjet\Jpsi_From_mother.png" user="Main.DongHoMoon" version="2"
META FILEATTACHMENT attachment="Muons_and_kaons_BtoJpsi.png" attr="" comment="" date="1241012423" name="Muons_and_kaons_BtoJpsi.png" path="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" size="19318" stream="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_10.png" attr="" comment="" date="1241018668" name="muon_combination_0_10.png" path="C:\root\20090403_Hydjet\muon_combination_0_10.png" size="14288" stream="C:\root\20090403_Hydjet\muon_combination_0_10.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_1_Gev.png" attr="" comment="" date="1241018753" name="muon_combination_0_1_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" size="17951" stream="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_2_4_Gev.png" attr="" comment="" date="1241023394" name="muon_combination_2_4_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" size="16272" stream="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="UpsilonFromMother2.png" attr="" comment="" date="1241642610" name="UpsilonFromMother2.png" path="C:\root\20090403_Hydjet\UpsilonFromMothers.png" size="15579" stream="C:\root\20090403_Hydjet\UpsilonFromMothers.png" user="Main.DongHoMoon" version="3"
Added:
>
>
META FILEATTACHMENT attachment="21X_Hydjet_Jpsi_pt.png" attr="" comment="" date="1244468516" name="21X_Hydjet_Jpsi_pt.png" path="21X_Hydjet_Jpsi_pt.png" size="16087" stream="21X_Hydjet_Jpsi_pt.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="31X_Hydjet_Jpsi_pt.png" attr="" comment="" date="1244468619" name="31X_Hydjet_Jpsi_pt.png" path="31X_Hydjet_Jpsi_pt.png" size="13864" stream="31X_Hydjet_Jpsi_pt.png" user="Main.DongHoMoon" version="1"
 

Revision 72009-05-06 - DongHoMoon

 
META TOPICPARENT name="DongHosLog"

Quarikonia Study

1. Motivation of Quarkonia (qqbar -> +mu -mu, J/psi, Upsilon family) Study at CMS (Fig. 1)

- Quarkonia's step-wise suppression at high pt region is the one of most direct probes of QGP (Quark-gluon-plasma)

- J/Psi's suppression is already observed in SPS and RHIC.

- So, how about it in CMS ? (there could be more huge suppression or enhanced regeneration ?) and how about Upsilon ?

What is more benefits of CMS than other experiments ?

- Increased energy : 5.5 TeV? (PbPb? collision) - 30 times more huge than RHIC (200 GeV? : AuAu?)

- It can make plasma hotter, longer-lived than RHIC (it can be easy to dissolute the particles which has large binding energy)

- provide good circumstances to produce Quarkonia highly

- high luminosities : 5*10^26 cm^-2 s^-1 (increase events rate)

- high gluon density at low-x, (the almost particles of heavy-flavor quarks is made by gluon-gluon fusion)

- New possibility of Upsilon family (Y, Y', Y'')

2. Quarkonia Generation with HYJET

2nd HYDJET production information

* decache location : /pnfs/cmsaf.mit.edu/t2bat/cms/store/user/davidlw/HYDJET_GEN_X2_MB_4.0TeV/HYDJET_GEN_X2_MB_4.0TeV/545444c24aba01a433ce34e4c379212c/

* 100k production by Wei, including more quarkonia

Analysis of quarkonia with CMSSW at CMSSW_2_1_x

- use 'HydQuarkoniaAnalyzer.cc'

1) pT distributions of J/psis

- the flat around 5 -10 GeV?/c doesn't feed down. This unexpected effect seems to be caused by the cases that the mother is J/psis themselves, chi_cs and color octet state. It is neccessary to check generation situation.

Mothers of J/psi
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 20 21 21
J/psi (443) 3992 21 11  
B0(+-511) 3133(3096) 11 or 12 11  
B+(+-521) 3152(2927) 11 11  
Bs0(+-531) 885(884) 11 11  
B_c(+-541) 27(21) 11 11  
chi_1c(20443) 3848 11 11  
chi_2c(445) 407 11 11  
chi_0c(10441) 17 11 11  
Lambda_b0(+-5122) 618(577) 11 11  
Xi_b-(+-5132) 23(19) 11 11  
Xi_b0-(+-5132) 24(15) 11 11  
Omega_b-(5332) 1 11 11  
Cluster(91) 327 11 11 cluster fragmention (pQCD)
cc~(9900443) 3375 11 11 Color Octet system
cc~(9910441) 336 11 11 Color Octet system
cc~(9900441) 261 11 11 Color Octet system
Total J/psi 27985      

- pT distribution of Upsilon from 100k hydjet minbias event.

Mothers of Upsilon
Mother (id) Number of production Status of Mother Status of J/psi Comment
<-- -->
Sorted ascending
None 34 21 21
Cluster (91) 328 11 11 cluster fragmention (pQCD)
bb bar 1s (9900551) 32 11 11 Color Octet system
bb bar 3s (9900553) 364 11 11 Color Octet system
bb bar 3p (9910551) 5 11 11 Color Octet system
Upsilon (553) 435 21 11  
Chi_0b (10551) 8 11 11  
Chi_1b (20553) 102 11 11  
Chi_2b (555) 81 11 11  
Total Upsilon 1084      

2) pT distributions of muons from Kaons, B meson and J/psis

3) Dimuon mass continuum with muon combination

- use 'MuonCombiAnalyzer.cc' - in order to look into clear signal, the study was done separately 0-1 GeV?/c^2, 2 - 4 GeV?/c^2, 0 - 10 GeV?/c^2.

Mass range 0 - 10 GeV?/c^2

Mass range 0 - 1 GeV?/c^2

Mass range 2 - 4 GeV?/c^2

-- DongHoMoon - 27 Apr 2009

META FILEATTACHMENT attachment="Fig01.jpg" attr="" comment="" date="1241010743" name="Fig01.jpg" path="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" size="47482" stream="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Jpsi_From_mother.png" attr="" comment="" date="1241617139" name="Jpsi_From_mother.png" path="C:\root\20090403_Hydjet\Jpsi_From_mother.png" size="25217" stream="C:\root\20090403_Hydjet\Jpsi_From_mother.png" user="Main.DongHoMoon" version="2"
META FILEATTACHMENT attachment="Muons_and_kaons_BtoJpsi.png" attr="" comment="" date="1241012423" name="Muons_and_kaons_BtoJpsi.png" path="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" size="19318" stream="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_10.png" attr="" comment="" date="1241018668" name="muon_combination_0_10.png" path="C:\root\20090403_Hydjet\muon_combination_0_10.png" size="14288" stream="C:\root\20090403_Hydjet\muon_combination_0_10.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_1_Gev.png" attr="" comment="" date="1241018753" name="muon_combination_0_1_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" size="17951" stream="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_2_4_Gev.png" attr="" comment="" date="1241023394" name="muon_combination_2_4_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" size="16272" stream="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" user="Main.DongHoMoon" version="1"
Changed:
<
<
META FILEATTACHMENT attachment="UpsilonFromMother2.png" attr="" comment="" date="1241597875" name="UpsilonFromMother2.png" path="C:\root\20090403_Hydjet\UpsilonFromMothers.png" size="17226" stream="C:\root\20090403_Hydjet\UpsilonFromMothers.png" user="Main.DongHoMoon" version="2"
>
>
META FILEATTACHMENT attachment="UpsilonFromMother2.png" attr="" comment="" date="1241642610" name="UpsilonFromMother2.png" path="C:\root\20090403_Hydjet\UpsilonFromMothers.png" size="15579" stream="C:\root\20090403_Hydjet\UpsilonFromMothers.png" user="Main.DongHoMoon" version="3"
 

Revision 62009-05-06 - DongHoMoon

 
META TOPICPARENT name="DongHosLog"

Quarikonia Study

1. Motivation of Quarkonia (qqbar -> +mu -mu, J/psi, Upsilon family) Study at CMS (Fig. 1)

- Quarkonia's step-wise suppression at high pt region is the one of most direct probes of QGP (Quark-gluon-plasma)

- J/Psi's suppression is already observed in SPS and RHIC.

- So, how about it in CMS ? (there could be more huge suppression or enhanced regeneration ?) and how about Upsilon ?

What is more benefits of CMS than other experiments ?

- Increased energy : 5.5 TeV? (PbPb? collision) - 30 times more huge than RHIC (200 GeV? : AuAu?)

- It can make plasma hotter, longer-lived than RHIC (it can be easy to dissolute the particles which has large binding energy)

- provide good circumstances to produce Quarkonia highly

- high luminosities : 5*10^26 cm^-2 s^-1 (increase events rate)

- high gluon density at low-x, (the almost particles of heavy-flavor quarks is made by gluon-gluon fusion)

- New possibility of Upsilon family (Y, Y', Y'')

2. Quarkonia Generation with HYJET

2nd HYDJET production information

* decache location : /pnfs/cmsaf.mit.edu/t2bat/cms/store/user/davidlw/HYDJET_GEN_X2_MB_4.0TeV/HYDJET_GEN_X2_MB_4.0TeV/545444c24aba01a433ce34e4c379212c/

* 100k production by Wei, including more quarkonia

Analysis of quarkonia with CMSSW at CMSSW_2_1_x

- use 'HydQuarkoniaAnalyzer.cc'

1) pT distributions of J/psis

- the flat around 5 -10 GeV?/c doesn't feed down. This unexpected effect seems to be caused by the cases that the mother is J/psis themselves, chi_cs and color octet state. It is neccessary to check generation situation.

Mothers of J/psi
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 20 21 21
Changed:
<
<
J/psi (443) 3997 21 11  
B0(+-511) 3141(3102) 11 or 12 11  
B+(+-521) 3159(2932) 11 11  
Bs0(+-531) 886(886) 11 11  
>
>
J/psi (443) 3992 21 11  
B0(+-511) 3133(3096) 11 or 12 11  
B+(+-521) 3152(2927) 11 11  
Bs0(+-531) 885(884) 11 11  
 
B_c(+-541) 27(21) 11 11  
Changed:
<
<
chi_1c(20443) 3855 11 11  
chi_2c(445) 409 11 11  
>
>
chi_1c(20443) 3848 11 11  
chi_2c(445) 407 11 11  
 
chi_0c(10441) 17 11 11  
Changed:
<
<
Lambda_b0(+-5122) 618(579) 11 11  
>
>
Lambda_b0(+-5122) 618(577) 11 11  
 
Xi_b-(+-5132) 23(19) 11 11  
Added:
>
>
Xi_b0-(+-5132) 24(15) 11 11  
 
Omega_b-(5332) 1 11 11  
Changed:
<
<
Cluster(91) 328 11 11 cluster fragmention (pQCD)
cc~(9900443) 3380 11 11 Color Octet system
>
>
Cluster(91) 327 11 11 cluster fragmention (pQCD)
cc~(9900443) 3375 11 11 Color Octet system
 
cc~(9910441) 336 11 11 Color Octet system
cc~(9900441) 261 11 11 Color Octet system
Added:
>
>
Total J/psi 27985      
 

- pT distribution of Upsilon from 100k hydjet minbias event.

Mothers of Upsilon
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 34 21 21
Upsilon (553) 435 21 11  
Chi_0b (10551) 8 11 11  
Chi_1b (20553) 102 11 11  
Chi_2b (555) 81 11 11  
bb bar 1s (9900551) 32 11 11 Color Octet system
bb bar 3s (9900553) 364 11 11 Color Octet system
bb bar 3p (9910551) 5 11 11 Color Octet system
Cluster (91) 328 11 11 cluster fragmention (pQCD)
Added:
>
>
Total Upsilon 1084      
 

2) pT distributions of muons from Kaons, B meson and J/psis

3) Dimuon mass continuum with muon combination

- use 'MuonCombiAnalyzer.cc' - in order to look into clear signal, the study was done separately 0-1 GeV?/c^2, 2 - 4 GeV?/c^2, 0 - 10 GeV?/c^2.

Mass range 0 - 10 GeV?/c^2

Mass range 0 - 1 GeV?/c^2

Mass range 2 - 4 GeV?/c^2

-- DongHoMoon - 27 Apr 2009

META FILEATTACHMENT attachment="Fig01.jpg" attr="" comment="" date="1241010743" name="Fig01.jpg" path="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" size="47482" stream="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" user="Main.DongHoMoon" version="1"
Changed:
<
<
META FILEATTACHMENT attachment="Jpsi_From_mother.png" attr="" comment="" date="1241012382" name="Jpsi_From_mother.png" path="C:\root\20090403_Hydjet\Jpsi_From_mother.png" size="23653" stream="C:\root\20090403_Hydjet\Jpsi_From_mother.png" user="Main.DongHoMoon" version="1"
>
>
META FILEATTACHMENT attachment="Jpsi_From_mother.png" attr="" comment="" date="1241617139" name="Jpsi_From_mother.png" path="C:\root\20090403_Hydjet\Jpsi_From_mother.png" size="25217" stream="C:\root\20090403_Hydjet\Jpsi_From_mother.png" user="Main.DongHoMoon" version="2"
 
META FILEATTACHMENT attachment="Muons_and_kaons_BtoJpsi.png" attr="" comment="" date="1241012423" name="Muons_and_kaons_BtoJpsi.png" path="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" size="19318" stream="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_10.png" attr="" comment="" date="1241018668" name="muon_combination_0_10.png" path="C:\root\20090403_Hydjet\muon_combination_0_10.png" size="14288" stream="C:\root\20090403_Hydjet\muon_combination_0_10.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_1_Gev.png" attr="" comment="" date="1241018753" name="muon_combination_0_1_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" size="17951" stream="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_2_4_Gev.png" attr="" comment="" date="1241023394" name="muon_combination_2_4_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" size="16272" stream="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="UpsilonFromMother2.png" attr="" comment="" date="1241597875" name="UpsilonFromMother2.png" path="C:\root\20090403_Hydjet\UpsilonFromMothers.png" size="17226" stream="C:\root\20090403_Hydjet\UpsilonFromMothers.png" user="Main.DongHoMoon" version="2"

Revision 52009-05-06 - DongHoMoon

 
META TOPICPARENT name="DongHosLog"

Quarikonia Study

1. Motivation of Quarkonia (qqbar -> +mu -mu, J/psi, Upsilon family) Study at CMS (Fig. 1)

- Quarkonia's step-wise suppression at high pt region is the one of most direct probes of QGP (Quark-gluon-plasma)

- J/Psi's suppression is already observed in SPS and RHIC.

- So, how about it in CMS ? (there could be more huge suppression or enhanced regeneration ?) and how about Upsilon ?

What is more benefits of CMS than other experiments ?

- Increased energy : 5.5 TeV? (PbPb? collision) - 30 times more huge than RHIC (200 GeV? : AuAu?)

- It can make plasma hotter, longer-lived than RHIC (it can be easy to dissolute the particles which has large binding energy)

- provide good circumstances to produce Quarkonia highly

- high luminosities : 5*10^26 cm^-2 s^-1 (increase events rate)

- high gluon density at low-x, (the almost particles of heavy-flavor quarks is made by gluon-gluon fusion)

- New possibility of Upsilon family (Y, Y', Y'')

2. Quarkonia Generation with HYJET

2nd HYDJET production information

* decache location : /pnfs/cmsaf.mit.edu/t2bat/cms/store/user/davidlw/HYDJET_GEN_X2_MB_4.0TeV/HYDJET_GEN_X2_MB_4.0TeV/545444c24aba01a433ce34e4c379212c/

* 100k production by Wei, including more quarkonia

Analysis of quarkonia with CMSSW at CMSSW_2_1_x

- use 'HydQuarkoniaAnalyzer.cc'

1) pT distributions of J/psis

- the flat around 5 -10 GeV?/c doesn't feed down. This unexpected effect seems to be caused by the cases that the mother is J/psis themselves, chi_cs and color octet state. It is neccessary to check generation situation.

Mothers of J/psi
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 20 21 21
J/psi (443) 3997 21 11  
B0(+-511) 3141(3102) 11 or 12 11  
B+(+-521) 3159(2932) 11 11  
Bs0(+-531) 886(886) 11 11  
B_c(+-541) 27(21) 11 11  
chi_1c(20443) 3855 11 11  
chi_2c(445) 409 11 11  
chi_0c(10441) 17 11 11  
Lambda_b0(+-5122) 618(579) 11 11  
Xi_b-(+-5132) 23(19) 11 11  
Omega_b-(5332) 1 11 11  
Cluster(91) 328 11 11 cluster fragmention (pQCD)
cc~(9900443) 3380 11 11 Color Octet system
cc~(9910441) 336 11 11 Color Octet system
cc~(9900441) 261 11 11 Color Octet system

- pT distribution of Upsilon from 100k hydjet minbias event.

Mothers of Upsilon
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 34 21 21
Upsilon (553) 435 21 11  
Chi_0b (10551) 8 11 11  
Chi_1b (20553) 102 11 11  
Chi_2b (555) 81 11 11  
bb bar 1s (9900551) 32 11 11 Color Octet system
bb bar 3s (9900553) 364 11 11 Color Octet system
bb bar 3p (9910551) 5 11 11 Color Octet system
Cluster (91) 328 11 11 cluster fragmention (pQCD)

2) pT distributions of muons from Kaons, B meson and J/psis

3) Dimuon mass continuum with muon combination

- use 'MuonCombiAnalyzer.cc' - in order to look into clear signal, the study was done separately 0-1 GeV?/c^2, 2 - 4 GeV?/c^2, 0 - 10 GeV?/c^2.

Mass range 0 - 10 GeV?/c^2

Mass range 0 - 1 GeV?/c^2

Mass range 2 - 4 GeV?/c^2

-- DongHoMoon - 27 Apr 2009

META FILEATTACHMENT attachment="Fig01.jpg" attr="" comment="" date="1241010743" name="Fig01.jpg" path="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" size="47482" stream="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Jpsi_From_mother.png" attr="" comment="" date="1241012382" name="Jpsi_From_mother.png" path="C:\root\20090403_Hydjet\Jpsi_From_mother.png" size="23653" stream="C:\root\20090403_Hydjet\Jpsi_From_mother.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Muons_and_kaons_BtoJpsi.png" attr="" comment="" date="1241012423" name="Muons_and_kaons_BtoJpsi.png" path="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" size="19318" stream="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_10.png" attr="" comment="" date="1241018668" name="muon_combination_0_10.png" path="C:\root\20090403_Hydjet\muon_combination_0_10.png" size="14288" stream="C:\root\20090403_Hydjet\muon_combination_0_10.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_1_Gev.png" attr="" comment="" date="1241018753" name="muon_combination_0_1_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" size="17951" stream="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_2_4_Gev.png" attr="" comment="" date="1241023394" name="muon_combination_2_4_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" size="16272" stream="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" user="Main.DongHoMoon" version="1"
Changed:
<
<
META FILEATTACHMENT attachment="UpsilonFromMother2.png" attr="" comment="" date="1241472467" name="UpsilonFromMother2.png" path="C:\root\20090403_Hydjet\UpsilonFromMother2.png" size="17127" stream="C:\root\20090403_Hydjet\UpsilonFromMother2.png" user="Main.DongHoMoon" version="1"
>
>
META FILEATTACHMENT attachment="UpsilonFromMother2.png" attr="" comment="" date="1241597875" name="UpsilonFromMother2.png" path="C:\root\20090403_Hydjet\UpsilonFromMothers.png" size="17226" stream="C:\root\20090403_Hydjet\UpsilonFromMothers.png" user="Main.DongHoMoon" version="2"
 

Revision 42009-05-06 - DongHoMoon

 
META TOPICPARENT name="DongHosLog"

Quarikonia Study

1. Motivation of Quarkonia (qqbar -> +mu -mu, J/psi, Upsilon family) Study at CMS (Fig. 1)

- Quarkonia's step-wise suppression at high pt region is the one of most direct probes of QGP (Quark-gluon-plasma)

- J/Psi's suppression is already observed in SPS and RHIC.

- So, how about it in CMS ? (there could be more huge suppression or enhanced regeneration ?) and how about Upsilon ?

What is more benefits of CMS than other experiments ?

- Increased energy : 5.5 TeV? (PbPb? collision) - 30 times more huge than RHIC (200 GeV? : AuAu?)

- It can make plasma hotter, longer-lived than RHIC (it can be easy to dissolute the particles which has large binding energy)

- provide good circumstances to produce Quarkonia highly

- high luminosities : 5*10^26 cm^-2 s^-1 (increase events rate)

- high gluon density at low-x, (the almost particles of heavy-flavor quarks is made by gluon-gluon fusion)

- New possibility of Upsilon family (Y, Y', Y'')

2. Quarkonia Generation with HYJET

2nd HYDJET production information

* decache location : /pnfs/cmsaf.mit.edu/t2bat/cms/store/user/davidlw/HYDJET_GEN_X2_MB_4.0TeV/HYDJET_GEN_X2_MB_4.0TeV/545444c24aba01a433ce34e4c379212c/

* 100k production by Wei, including more quarkonia

Analysis of quarkonia with CMSSW at CMSSW_2_1_x

- use 'HydQuarkoniaAnalyzer.cc'

1) pT distributions of J/psis

- the flat around 5 -10 GeV?/c doesn't feed down. This unexpected effect seems to be caused by the cases that the mother is J/psis themselves, chi_cs and color octet state. It is neccessary to check generation situation.

Added:
>
>
 Mothers of J/psi
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 20 21 21
J/psi (443) 3997 21 11  
B0(+-511) 3141(3102) 11 or 12 11  
B+(+-521) 3159(2932) 11 11  
Bs0(+-531) 886(886) 11 11  
B_c(+-541) 27(21) 11 11  
chi_1c(20443) 3855 11 11  
chi_2c(445) 409 11 11  
chi_0c(10441) 17 11 11  
Lambda_b0(+-5122) 618(579) 11 11  
Xi_b-(+-5132) 23(19) 11 11  
Omega_b-(5332) 1 11 11  
Cluster(91) 328 11 11 cluster fragmention (pQCD)
cc~(9900443) 3380 11 11 Color Octet system
cc~(9910441) 336 11 11 Color Octet system
cc~(9900441) 261 11 11 Color Octet system
Changed:
<
<
>
>
 

- pT distribution of Upsilon from 100k hydjet minbias event.

Added:
>
>
 Mothers of Upsilon
Mother (id) Number of production Status of Mother Status of J/psi Comment
None 34 21 21
Upsilon (553) 435 21 11  
Chi_0b (10551) 8 11 11  
Chi_1b (20553) 102 11 11  
Chi_2b (555) 81 11 11  
bb bar 1s (9900551) 32 11 11 Color Octet system
bb bar 3s (9900553) 364 11 11 Color Octet system
bb bar 3p (9910551) 5 11 11 Color Octet system
Cluster (91) 328 11 11 cluster fragmention (pQCD)
Changed:
<
<
>
>
 

2) pT distributions of muons from Kaons, B meson and J/psis

3) Dimuon mass continuum with muon combination

- use 'MuonCombiAnalyzer.cc' - in order to look into clear signal, the study was done separately 0-1 GeV?/c^2, 2 - 4 GeV?/c^2, 0 - 10 GeV?/c^2.

Mass range 0 - 10 GeV?/c^2

Mass range 0 - 1 GeV?/c^2

Mass range 2 - 4 GeV?/c^2

-- DongHoMoon - 27 Apr 2009

META FILEATTACHMENT attachment="Fig01.jpg" attr="" comment="" date="1241010743" name="Fig01.jpg" path="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" size="47482" stream="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Jpsi_From_mother.png" attr="" comment="" date="1241012382" name="Jpsi_From_mother.png" path="C:\root\20090403_Hydjet\Jpsi_From_mother.png" size="23653" stream="C:\root\20090403_Hydjet\Jpsi_From_mother.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Muons_and_kaons_BtoJpsi.png" attr="" comment="" date="1241012423" name="Muons_and_kaons_BtoJpsi.png" path="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" size="19318" stream="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_10.png" attr="" comment="" date="1241018668" name="muon_combination_0_10.png" path="C:\root\20090403_Hydjet\muon_combination_0_10.png" size="14288" stream="C:\root\20090403_Hydjet\muon_combination_0_10.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_1_Gev.png" attr="" comment="" date="1241018753" name="muon_combination_0_1_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" size="17951" stream="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_2_4_Gev.png" attr="" comment="" date="1241023394" name="muon_combination_2_4_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" size="16272" stream="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="UpsilonFromMother2.png" attr="" comment="" date="1241472467" name="UpsilonFromMother2.png" path="C:\root\20090403_Hydjet\UpsilonFromMother2.png" size="17127" stream="C:\root\20090403_Hydjet\UpsilonFromMother2.png" user="Main.DongHoMoon" version="1"

Revision 32009-05-04 - DongHoMoon

 
META TOPICPARENT name="DongHosLog"

Quarikonia Study

1. Motivation of Quarkonia (qqbar -> +mu -mu, J/psi, Upsilon family) Study at CMS (Fig. 1)

- Quarkonia's step-wise suppression at high pt region is the one of most direct probes of QGP (Quark-gluon-plasma)

- J/Psi's suppression is already observed in SPS and RHIC.

- So, how about it in CMS ? (there could be more huge suppression or enhanced regeneration ?) and how about Upsilon ?

What is more benefits of CMS than other experiments ?

- Increased energy : 5.5 TeV? (PbPb? collision) - 30 times more huge than RHIC (200 GeV? : AuAu?)

- It can make plasma hotter, longer-lived than RHIC (it can be easy to dissolute the particles which has large binding energy)

- provide good circumstances to produce Quarkonia highly

- high luminosities : 5*10^26 cm^-2 s^-1 (increase events rate)

- high gluon density at low-x, (the almost particles of heavy-flavor quarks is made by gluon-gluon fusion)

- New possibility of Upsilon family (Y, Y', Y'')

2. Quarkonia Generation with HYJET

2nd HYDJET production information

* decache location : /pnfs/cmsaf.mit.edu/t2bat/cms/store/user/davidlw/HYDJET_GEN_X2_MB_4.0TeV/HYDJET_GEN_X2_MB_4.0TeV/545444c24aba01a433ce34e4c379212c/

* 100k production by Wei, including more quarkonia

Analysis of quarkonia with CMSSW at CMSSW_2_1_x

- use 'HydQuarkoniaAnalyzer.cc'

1) pT distributions of J/psis

- the flat around 5 -10 GeV?/c doesn't feed down. This unexpected effect seems to be caused by the cases that the mother is J/psis themselves, chi_cs and color octet state. It is neccessary to check generation situation.

Changed:
<
<
other mothers of J/psi
>
>
Mothers of J/psi
 
Mother (id) Number of production Status of Mother Status of J/psi Comment
Changed:
<
<
J/psi (443) 3997 21 11  
B0(+-511) 3141(3102) 11 or 12 11  
B+(+-521) 3159(2932) 11 11  
Bs0(+-531) 886(886) 11 11  
B_c(+-541) 27(21) 11 11  
chi_1c(20443) 3855 11 11  
chi_2c(445) 409 11 11  
chi_0c(10441) 17 11 11  
Lambda_b0(+-5122) 618(579) 11 11  
Xi_b-(+-5132) 23(19) 11 11  
Omega_b-(5332) 1 11 11  
Cluster(91) 328 11 11 cluster fragmention (pQCD)
cc~(9900443) 3380 11 11 Color Octet system
cc~(9910441) 336 11 11 Color Octet system
cc~(9900441) 261 11 11 Color Octet system
>
>
None 20 21 21
J/psi (443) 3997 21 11  
B0(+-511) 3141(3102) 11 or 12 11  
B+(+-521) 3159(2932) 11 11  
Bs0(+-531) 886(886) 11 11  
B_c(+-541) 27(21) 11 11  
chi_1c(20443) 3855 11 11  
chi_2c(445) 409 11 11  
chi_0c(10441) 17 11 11  
Lambda_b0(+-5122) 618(579) 11 11  
Xi_b-(+-5132) 23(19) 11 11  
Omega_b-(5332) 1 11 11  
Cluster(91) 328 11 11 cluster fragmention (pQCD)
cc~(9900443) 3380 11 11 Color Octet system
cc~(9910441) 336 11 11 Color Octet system
Added:
>
>
cc~(9900441) 261 11 11 Color Octet system
 
Added:
>
>

- pT distribution of Upsilon from 100k hydjet minbias event.

Mothers of Upsilon

Mother (id) Number of production Status of Mother Status of J/psi Comment
None 34 21 21
Upsilon (553) 435 21 11  
Chi_0b (10551) 8 11 11  
Chi_1b (20553) 102 11 11  
Chi_2b (555) 81 11 11  
bb bar 1s (9900551) 32 11 11 Color Octet system
bb bar 3s (9900553) 364 11 11 Color Octet system
bb bar 3p (9910551) 5 11 11 Color Octet system
Cluster (91) 328 11 11 cluster fragmention (pQCD)
 

2) pT distributions of muons from Kaons, B meson and J/psis

3) Dimuon mass continuum with muon combination

- use 'MuonCombiAnalyzer.cc' - in order to look into clear signal, the study was done separately 0-1 GeV?/c^2, 2 - 4 GeV?/c^2, 0 - 10 GeV?/c^2.

Mass range 0 - 10 GeV?/c^2

Mass range 0 - 1 GeV?/c^2

Mass range 2 - 4 GeV?/c^2

-- DongHoMoon - 27 Apr 2009

META FILEATTACHMENT attachment="Fig01.jpg" attr="" comment="" date="1241010743" name="Fig01.jpg" path="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" size="47482" stream="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Jpsi_From_mother.png" attr="" comment="" date="1241012382" name="Jpsi_From_mother.png" path="C:\root\20090403_Hydjet\Jpsi_From_mother.png" size="23653" stream="C:\root\20090403_Hydjet\Jpsi_From_mother.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Muons_and_kaons_BtoJpsi.png" attr="" comment="" date="1241012423" name="Muons_and_kaons_BtoJpsi.png" path="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" size="19318" stream="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_10.png" attr="" comment="" date="1241018668" name="muon_combination_0_10.png" path="C:\root\20090403_Hydjet\muon_combination_0_10.png" size="14288" stream="C:\root\20090403_Hydjet\muon_combination_0_10.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_1_Gev.png" attr="" comment="" date="1241018753" name="muon_combination_0_1_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" size="17951" stream="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_2_4_Gev.png" attr="" comment="" date="1241023394" name="muon_combination_2_4_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" size="16272" stream="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" user="Main.DongHoMoon" version="1"
Added:
>
>
META FILEATTACHMENT attachment="UpsilonFromMother2.png" attr="" comment="" date="1241472467" name="UpsilonFromMother2.png" path="C:\root\20090403_Hydjet\UpsilonFromMother2.png" size="17127" stream="C:\root\20090403_Hydjet\UpsilonFromMother2.png" user="Main.DongHoMoon" version="1"
 

Revision 22009-04-29 - DongHoMoon

 
META TOPICPARENT name="DongHosLog"

Quarikonia Study

1. Motivation of Quarkonia (qqbar -> +mu -mu, J/psi, Upsilon family) Study at CMS (Fig. 1)

- Quarkonia's step-wise suppression at high pt region is the one of most direct probes of QGP (Quark-gluon-plasma)

- J/Psi's suppression is already observed in SPS and RHIC.

- So, how about it in CMS ? (there could be more huge suppression or enhanced regeneration ?) and how about Upsilon ?

What is more benefits of CMS than other experiments ?

- Increased energy : 5.5 TeV? (PbPb? collision) - 30 times more huge than RHIC (200 GeV? : AuAu?)

- It can make plasma hotter, longer-lived than RHIC (it can be easy to dissolute the particles which has large binding energy)

- provide good circumstances to produce Quarkonia highly

- high luminosities : 5*10^26 cm^-2 s^-1 (increase events rate)

- high gluon density at low-x, (the almost particles of heavy-flavor quarks is made by gluon-gluon fusion)

- New possibility of Upsilon family (Y, Y', Y'')

2. Quarkonia Generation with HYJET

2nd HYDJET production information

* decache location : /pnfs/cmsaf.mit.edu/t2bat/cms/store/user/davidlw/HYDJET_GEN_X2_MB_4.0TeV/HYDJET_GEN_X2_MB_4.0TeV/545444c24aba01a433ce34e4c379212c/

* 100k production by Wei, including more quarkonia

Analysis of quarkonia with CMSSW at CMSSW_2_1_x

- use 'HydQuarkoniaAnalyzer.cc'

1) pT distributions of J/psis

- the flat around 5 -10 GeV?/c doesn't feed down. This unexpected effect seems to be caused by the cases that the mother is J/psis themselves, chi_cs and color octet state. It is neccessary to check generation situation.

other mothers of J/psi

Mother (id) Number of production Status of Mother Status of J/psi Comment
J/psi (443) 3997 21 11  
B0(+-511) 3141(3102) 11 or 12 11  
B+(+-521) 3159(2932) 11 11  
Bs0(+-531) 886(886) 11 11  
B_c(+-541) 27(21) 11 11  
chi_1c(20443) 3855 11 11  
chi_2c(445) 409 11 11  
chi_0c(10441) 17 11 11  
Lambda_b0(+-5122) 618(579) 11 11  
Xi_b-(+-5132) 23(19) 11 11  
Omega_b-(5332) 1 11 11  
Cluster(91) 328 11 11 cluster fragmention (pQCD)
cc~(9900443) 3380 11 11 Color Octet system
cc~(9910441) 336 11 11 Color Octet system
cc~(9900441) 261 11 11 Color Octet system

2) pT distributions of muons from Kaons, B meson and J/psis

Changed:
<
<

3) Dimuon combination

>
>

3) Dimuon mass continuum with muon combination

  - use 'MuonCombiAnalyzer.cc' - in order to look into clear signal, the study was done separately 0-1 GeV?/c^2, 2 - 4 GeV?/c^2, 0 - 10 GeV?/c^2.

Mass range 0 - 10 GeV?/c^2

Mass range 0 - 1 GeV?/c^2

Changed:
<
<
>
>
  Mass range 2 - 4 GeV?/c^2
Changed:
<
<
>
>
 
Deleted:
<
<
 
Deleted:
<
<

3. Analysis of Quarkonia

- using module "PhysicsTools/CandExamples"

Analysis of J/Psi generation

- Invariant Mass of J/Psi

- Eta distribution of J/Psi

- Phi distribution of J/Psi

- Pt distribution of J/Psi

Analysis of Upsilon generation

- Invariant Mass of Upsilon

- Eta distribution of Upsilon

- Phi distribution of Upsilon

- Pt distribution of Upsilon

  -- DongHoMoon - 27 Apr 2009

META FILEATTACHMENT attachment="Fig01.jpg" attr="" comment="" date="1241010743" name="Fig01.jpg" path="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" size="47482" stream="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Jpsi_From_mother.png" attr="" comment="" date="1241012382" name="Jpsi_From_mother.png" path="C:\root\20090403_Hydjet\Jpsi_From_mother.png" size="23653" stream="C:\root\20090403_Hydjet\Jpsi_From_mother.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Muons_and_kaons_BtoJpsi.png" attr="" comment="" date="1241012423" name="Muons_and_kaons_BtoJpsi.png" path="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" size="19318" stream="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_10.png" attr="" comment="" date="1241018668" name="muon_combination_0_10.png" path="C:\root\20090403_Hydjet\muon_combination_0_10.png" size="14288" stream="C:\root\20090403_Hydjet\muon_combination_0_10.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_1_Gev.png" attr="" comment="" date="1241018753" name="muon_combination_0_1_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" size="17951" stream="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" user="Main.DongHoMoon" version="1"
Added:
>
>
META FILEATTACHMENT attachment="muon_combination_2_4_Gev.png" attr="" comment="" date="1241023394" name="muon_combination_2_4_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" size="16272" stream="C:\root\20090403_Hydjet\muon_combination_2_4_Gev.png" user="Main.DongHoMoon" version="1"
 

Revision 12009-04-29 - DongHoMoon

 
META TOPICPARENT name="DongHosLog"

Quarikonia Study

1. Motivation of Quarkonia (qqbar -> +mu -mu, J/psi, Upsilon family) Study at CMS (Fig. 1)

- Quarkonia's step-wise suppression at high pt region is the one of most direct probes of QGP (Quark-gluon-plasma)

- J/Psi's suppression is already observed in SPS and RHIC.

- So, how about it in CMS ? (there could be more huge suppression or enhanced regeneration ?) and how about Upsilon ?

What is more benefits of CMS than other experiments ?

- Increased energy : 5.5 TeV? (PbPb? collision) - 30 times more huge than RHIC (200 GeV? : AuAu?)

- It can make plasma hotter, longer-lived than RHIC (it can be easy to dissolute the particles which has large binding energy)

- provide good circumstances to produce Quarkonia highly

- high luminosities : 5*10^26 cm^-2 s^-1 (increase events rate)

- high gluon density at low-x, (the almost particles of heavy-flavor quarks is made by gluon-gluon fusion)

- New possibility of Upsilon family (Y, Y', Y'')

2. Quarkonia Generation with HYJET

2nd HYDJET production information

* decache location : /pnfs/cmsaf.mit.edu/t2bat/cms/store/user/davidlw/HYDJET_GEN_X2_MB_4.0TeV/HYDJET_GEN_X2_MB_4.0TeV/545444c24aba01a433ce34e4c379212c/

* 100k production by Wei, including more quarkonia

Analysis of quarkonia with CMSSW at CMSSW_2_1_x

- use 'HydQuarkoniaAnalyzer.cc'

1) pT distributions of J/psis

- the flat around 5 -10 GeV?/c doesn't feed down. This unexpected effect seems to be caused by the cases that the mother is J/psis themselves, chi_cs and color octet state. It is neccessary to check generation situation.

other mothers of J/psi

Mother (id) Number of production Status of Mother Status of J/psi Comment
J/psi (443) 3997 21 11  
B0(+-511) 3141(3102) 11 or 12 11  
B+(+-521) 3159(2932) 11 11  
Bs0(+-531) 886(886) 11 11  
B_c(+-541) 27(21) 11 11  
chi_1c(20443) 3855 11 11  
chi_2c(445) 409 11 11  
chi_0c(10441) 17 11 11  
Lambda_b0(+-5122) 618(579) 11 11  
Xi_b-(+-5132) 23(19) 11 11  
Omega_b-(5332) 1 11 11  
Cluster(91) 328 11 11 cluster fragmention (pQCD)
cc~(9900443) 3380 11 11 Color Octet system
cc~(9910441) 336 11 11 Color Octet system
cc~(9900441) 261 11 11 Color Octet system

2) pT distributions of muons from Kaons, B meson and J/psis

3) Dimuon combination

- use 'MuonCombiAnalyzer.cc' - in order to look into clear signal, the study was done separately 0-1 GeV?/c^2, 2 - 4 GeV?/c^2, 0 - 10 GeV?/c^2.

Mass range 0 - 10 GeV?/c^2

Mass range 0 - 1 GeV?/c^2

Mass range 2 - 4 GeV?/c^2

3. Analysis of Quarkonia

- using module "PhysicsTools/CandExamples"

Analysis of J/Psi generation

- Invariant Mass of J/Psi

- Eta distribution of J/Psi

- Phi distribution of J/Psi

- Pt distribution of J/Psi

Analysis of Upsilon generation

- Invariant Mass of Upsilon

- Eta distribution of Upsilon

- Phi distribution of Upsilon

- Pt distribution of Upsilon

-- DongHoMoon - 27 Apr 2009

META FILEATTACHMENT attachment="Fig01.jpg" attr="" comment="" date="1241010743" name="Fig01.jpg" path="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" size="47482" stream="D:\CMS 백업\2111_GenAna_Hydjet\Twiki pics\Fig01.jpg" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Jpsi_From_mother.png" attr="" comment="" date="1241012382" name="Jpsi_From_mother.png" path="C:\root\20090403_Hydjet\Jpsi_From_mother.png" size="23653" stream="C:\root\20090403_Hydjet\Jpsi_From_mother.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="Muons_and_kaons_BtoJpsi.png" attr="" comment="" date="1241012423" name="Muons_and_kaons_BtoJpsi.png" path="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" size="19318" stream="C:\root\20090403_Hydjet\Muons_and_kaons_BtoJpsi.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_10.png" attr="" comment="" date="1241018668" name="muon_combination_0_10.png" path="C:\root\20090403_Hydjet\muon_combination_0_10.png" size="14288" stream="C:\root\20090403_Hydjet\muon_combination_0_10.png" user="Main.DongHoMoon" version="1"
META FILEATTACHMENT attachment="muon_combination_0_1_Gev.png" attr="" comment="" date="1241018753" name="muon_combination_0_1_Gev.png" path="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" size="17951" stream="C:\root\20090403_Hydjet\muon_combination_0_1_Gev.png" user="Main.DongHoMoon" version="1"
 
This site is powered by the TWiki collaboration platform Powered by Perl This site is powered by the TWiki collaboration platformCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding KoreaCmsWiki? Send feedback