Dead Cone Effect of Charm Quark Radiation

ZHANG Xiao-Ming; ZHU Yan; HE Yun-Chun; ZHOU Dai-Cui

Chinese Physics C> 2007, Vol. 31> Issue(1) : 43-47

Dead Cone Effect of Charm Quark Radiation

Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

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Abstract：
Radiative energy loss rate of heavy quark traversing through thermal dense matter which is formed in heavy ion collisions has been studied under an assumption of valid factorized method, in which light quark radiative spectrum is used to multiply an dead-cone factor depending on quark mass and energy. The numerical calculated results with energies at RHIC and LHC show that the heavy quark radiation spectra, obtained by extending light quark energy spectrum, are approximately consistent with that calculated under pQCD frame by Djordjecvic-Guulassy. The calculation is simplified by using of factorial dead cone factor and equivalent results can be obtained.

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[1]

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ZHANG Xiao-Ming, ZHU Yan, HE Yun-Chun and ZHOU Dai-Cui. Dead Cone Effect of Charm Quark Radiation[J]. Chinese Physics C, 2007, 31(1): 43-47.

ZHANG Xiao-Ming, ZHU Yan, HE Yun-Chun and ZHOU Dai-Cui. Dead Cone Effect of Charm Quark Radiation[J]. Chinese Physics C, 2007, 31(1): 43-47. shu

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Received: 2006-04-20
Revised: 2006-07-30

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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

Dead Cone Effect of Charm Quark Radiation

Corresponding author: ZHOU Dai-Cui,

Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China

Received Date: 2006-04-20

Accepted Date: 2006-07-30

Available Online: 2007-01-05

Abstract: Radiative energy loss rate of heavy quark traversing through thermal dense matter which is formed in heavy ion collisions has been studied under an assumption of valid factorized method, in which light quark radiative spectrum is used to multiply an dead-cone factor depending on quark mass and energy. The numerical calculated results with energies at RHIC and LHC show that the heavy quark radiation spectra, obtained by extending light quark energy spectrum, are approximately consistent with that calculated under pQCD frame by Djordjecvic-Guulassy. The calculation is simplified by using of factorial dead cone factor and equivalent results can be obtained.

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Dead Cone Effect of Charm Quark Radiation

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