J/ψ Suppression in a Hadron and String Cascade Model

Sa Benhao; Tai An; Wang Hui; Liu Fenghe

Chinese Physics C> 1999, Vol. 23> Issue(5) : 489-495

J/ψ Suppression in a Hadron and String Cascade Model

China Institute of Atomic Energy, Beijing 1024131 Institute of High Energy Physics. The Chinese Academy of Sciences, Beijing 100039

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Abstract：
The proposed hadron and string cascade model, JPCIAE, for ultrarelativistic nucleus-nucleus collisions based on the LUND model and the PYTHIA event generator especially, is used to inveshgate the J/ψ suppression due to the nuclear absorption of a J/ψ in minimum bias pA and BA collisions at 200A GeV energy. With the different sets of reasonable formation bine for hadron and J/ψ the results of J/ψ suppression factor from both the usual scenario and the Glauber-like simulations are comparable with all the NA38 PA and BA data, except the NA50 data of Ph+Pb collisions. However, the difference between the usual scenario and the Glauber-like simulation, hence the difference betWeen the dynamical simulation and Glauber theory,can not be ignored. The sensitive effect of the hadron formation bine on the J/ψ suppression is studied in detail. The results seem to denote that for the J/ψ suppression the meson absorption plays a role in pA as well as in BA collisions.

References

[1]

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Sa Benhao, Tai An, Wang Hui and Liu Fenghe. J/ψ Suppression in a Hadron and String Cascade Model[J]. Chinese Physics C, 1999, 23(5): 489-495.

Sa Benhao, Tai An, Wang Hui and Liu Fenghe. J/ψ Suppression in a Hadron and String Cascade Model[J]. Chinese Physics C, 1999, 23(5): 489-495. shu

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Received: 1998-04-13
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

J/ψ Suppression in a Hadron and String Cascade Model

Corresponding author: Sa Benhao,

China Institute of Atomic Energy, Beijing 1024131 Institute of High Energy Physics. The Chinese Academy of Sciences, Beijing 100039

Received Date: 1998-04-13

Accepted Date: 1900-01-01

Available Online: 1999-05-05

Abstract: The proposed hadron and string cascade model, JPCIAE, for ultrarelativistic nucleus-nucleus collisions based on the LUND model and the PYTHIA event generator especially, is used to inveshgate the J/ψ suppression due to the nuclear absorption of a J/ψ in minimum bias pA and BA collisions at 200A GeV energy. With the different sets of reasonable formation bine for hadron and J/ψ the results of J/ψ suppression factor from both the usual scenario and the Glauber-like simulations are comparable with all the NA38 PA and BA data, except the NA50 data of Ph+Pb collisions. However, the difference between the usual scenario and the Glauber-like simulation, hence the difference betWeen the dynamical simulation and Glauber theory,can not be ignored. The sensitive effect of the hadron formation bine on the J/ψ suppression is studied in detail. The results seem to denote that for the J/ψ suppression the meson absorption plays a role in pA as well as in BA collisions.

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J/ψ Suppression in a Hadron and String Cascade Model

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