-
Abstract:
In this paper, by means of the nuclear parton distribution obtained from the DGLAP equation, taking into account the energy loss of the beam proton through the nucleus, we analyze the QCD corrections to the measured Drell-Yan production cross sections for an 800GeV proton beam incident on Be, Fe and W nuclear targets in the Glauber model. For the nuclear parton distribution being extracted from the leading order, the results show that the QCD corrections can't improve the theoretical results fitting to the experimental data, especially in the cross section ratio of p-W to p-Be verse x1. Then we calculate the Drell-Yan cross sections using the shadowing effect, which is extracted from the next-to-leading order by Frankfurt et al., and find that direct photon production should be sensitive to energy loss in Compton scattering and annihilation process.
-
-
References
[1]
|
. Drell S, YAN T M. Phys. Rev. Lett., 1970, 25: 316-3202. Vasiliev M A et al. Phys. Rev. Lett., 1999, 83: 2304-23073. Johson M B et al. Phys. Rev. Lett., 2001, 86: 4483-44874. DUAN Chun-Gui, WANG Hong-Min, LI Guang-Lie. Chin.Phys. Lett., 2002, 19: 485-4875. Frankfurt L et al. arXiv: hep-ph/03030226. Glauber R J. Lecture in Theoretical Physics. New York:Interscience, 1959, (Vol.1), 3157. Wong C Y. Phys. Rev., 1984, D30: 961-9718. YANG Jian-Jun, LI Guang-Lie. Eur. Phys. J., 1998, C5:719-7229. Kubar J, Bellac M L, Meunier J L et al. Nucl. Phys., 1980,B175: 251-27510. Greiner W, Schfer A. Quantum Chromodynamics. NewYork: Springer-Verlag, 1994. 286-29711. HOU Z Y, ZHENG Q, DUAN C G et al. Commun. Theor.Phys., 2000, 34: 377-38012. Eskola K J et al. Eur. Phys. J., 1999, C9: 6113. Pumplin J et al. JHEP, 2002, 0207: 01214. Gavin S, Milana J. Phys. Rev. Lett., 1992, 68: 1834-183715. Brodsky S J, Hoyer P. Phys. Lett., 1993, B298: 165-170 |
-
[1] |
A.G.Drentje
. Gas-mixing: Ion Cooling or Reduced Turbulent Heating?. Chinese Physics C,
2007, 31(S1): 162-164. |
[2] |
Yang Jianjun
, Ma Boqiang
, Li Guanglie
. Non-perturbative Quark Propagator and the Study of the Non-trivial Q2 Dependence in the Nucleon Structure Functions. Chinese Physics C,
1997, 21(2): 146-156. |
[3] |
Yu Hong
, Shen Qixing
, Zhang Lin
. Angular Distribution of Process e+e-→τ+τ-,τ-→a1υτ,a1→ρπ and Characteristics of a1 Meson. Chinese Physics C,
1994, 18(7): 583-590. |
-
Access
-
-