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arXiv 0902.4028hep-phastro-ph.HEhep-exnucl-ex
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重离子碰撞中的软开粲产生

Soft Open Charm Production in Heavy-Ion Collisions

V. Topor Pop, J. Barrette, M. Gyulassy

摘要:

在HIJING-BBbar v2.0模型框架下,研究了强纵向色电场(SCF)对200 AGeV核-核(A + A)碰撞中开粲产生的影响.由于A + A碰撞中的介质效应,有效弦张力增加了三倍,导致总的粲产生截面有相当大的增加(60-70个单位)。核修正因子在中等横动量下表现出抑制作用,与RHIC数据一致。在大型强子对撞机能量的模型预测增加的总魅力生产截面约一个数量级。

英文摘要:

Effects of strong longitudinal color electric fields (SCF) on the open charm production in nucleus-nucleus (A + A) collisions at 200A GeV are investigated within the framework of the HIJING-BBbar v2.0 model. A three fold increase of the effective string tension due to in medium effects in A + A collisions, results in a sizeable (60-70 percents) enhancement of the total charm production cross sections. The nuclear modification factors show a suppression at moderate transverse momentum consistent with RHIC data. At Large Hadron Collider energies the model predicts an increase of total charm production cross sections by approximately an order of magnitude.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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