Drell-Yan dilepton production in relativistic heavy-ion collisions at RHIC

FENG Xiu-Mei; ZHANG Ben-Wei

doi:10.1088/1674-1137/35/9/008

Chinese Physics C> 2011, Vol. 35> Issue(9) : 829-832 DOI: 10.1088/1674-1137/35/9/008

Drell-Yan dilepton production in relativistic heavy-ion collisions at RHIC

FENG Xiu-Mei ^, ,
ZHANG Ben-Wei ^,

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Abstract：
We investigate the lepton pair production with the Drell-Yan process in relativistic heavy ion collisions by computing the double differential cross section dσ/dM²dy and dσ/dM²dx_F at the next-to-leading order in p+Au and Au+Au collisions with √s_NN =200 GeV at RHIC. The resulting nuclear modification factors R^pAu and R^AuAu show strong sensitivity to the cold nuclear matter (CNM) effects and could probe the CNM effects at a very wide region of the longitudinal momentum fraction x. The variation of R with the invariant mass M, the rapidity y and the Feynman variable x_F is shown and we find that the nuclear modification factor for the double differential cross section could be smaller than 0.4 in some kinematic regions of high-energy nucleus-nucleus reactions at RHIC.

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FENG Xiu-Mei and ZHANG Ben-Wei. Drell-Yan dilepton production in relativistic heavy-ion collisions at RHIC[J]. Chinese Physics C, 2011, 35(9): 829-832. doi: 10.1088/1674-1137/35/9/008

FENG Xiu-Mei and ZHANG Ben-Wei. Drell-Yan dilepton production in relativistic heavy-ion collisions at RHIC[J]. Chinese Physics C, 2011, 35(9): 829-832. doi: 10.1088/1674-1137/35/9/008 shu

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Received: 2010-11-30
Revised: 2010-12-30

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通讯作者: 陈斌, [email protected]

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沈阳化工大学材料科学与工程学院沈阳 110142

Drell-Yan dilepton production in relativistic heavy-ion collisions at RHIC

Corresponding author: FENG Xiu-Mei,

Corresponding author: ZHANG Ben-Wei,

Received Date: 2010-11-30

Accepted Date: 2010-12-30

Available Online: 2011-09-05

Abstract: We investigate the lepton pair production with the Drell-Yan process in relativistic heavy ion collisions by computing the double differential cross section dσ/dM²dy and dσ/dM²dx_F at the next-to-leading order in p+Au and Au+Au collisions with √s_NN =200 GeV at RHIC. The resulting nuclear modification factors R^pAu and R^AuAu show strong sensitivity to the cold nuclear matter (CNM) effects and could probe the CNM effects at a very wide region of the longitudinal momentum fraction x. The variation of R with the invariant mass M, the rapidity y and the Feynman variable x_F is shown and we find that the nuclear modification factor for the double differential cross section could be smaller than 0.4 in some kinematic regions of high-energy nucleus-nucleus reactions at RHIC.

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Drell-Yan dilepton production in relativistic heavy-ion collisions at RHIC

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