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arXiv 1210.2385hep-phhep-exnucl-th
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在LHC和QCD饱和的特征下p+A碰撞的CGC预测

CGC predictions for p+A collisions at the LHC and signature of QCD saturation

Amir H. Rezaeian

摘要:

在色玻璃凝聚体(CGC)理论框架内,我们对即将发生的\sqrt{S} =5 TeV的p+Pb碰撞给出了各种预言,包括单包含带电强子产生、单包含瞬发光子产生、直接光子产生、带电强子多重数分布和光子-强子方位角关联.使用运行耦合Balitsky-Kovchegov演化方程计算各种观测值,我们表明,不确定性的主要来源是由于约束较少的初始核饱和尺度。这给大型强子对撞机的核修饰因子R_{pA}带来了相当大的理论不确定性。尽管如此,我们提出了一个简单的方案,其中仍然可以测试的主要动力学的CGC/饱和p+A碰撞在大型强子对撞机。

英文摘要:

We present various predictions for the upcoming p+Pb collisions at \sqrt{S}=5 TeV within the color glass condensate (CGC) formalism, including single inclusive charged hadron production, single inclusive prompt photon production, direct photon production, charged hadron multiplicity distribution and photon-hadron azimuthal correlations. Using the running-coupling Balitsky-Kovchegov evolution equation for calculating various observables, we show that the main source of uncertainties is due to less constrained initial nuclear saturation scale. This gives rise to rather large theoretical uncertainties for nuclear modification factor R_{pA} at the LHC. Nevertheless, we propose a simple scheme in which one can still test the main dynamics of the CGC/saturation in p+A collisions at the LHC.

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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