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arXiv 1201.2658hep-phnucl-th
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强子-强子碰撞中强色场对长程快度关联的方位准直

Azimuthal collimation of long range rapidity correlations by strong color fields in high multiplicity hadron-hadron collisions

Kevin Dusling, Raju Venugopalan

摘要:

在彩色玻璃凝聚(CGC)有效理论[1]中,由于强子波函数中胶子的饱和,使得α_S^(-8)得到增强,从而得到了N_c^2抑制的多梯QCD图,描述了LHC高多重数p+p碰撞中具有大快度间隔的双强子的方位准直。我们表明,定量计算在CGC框架中的CMS实验的数据,每触发双强子产量和预测进一步的系统学这些产量与不同的触发pT和带电强子多重性是一致的。由再散射产生的径向流受到p+p双强子关联结构的强烈限制。相反,径向流解释了重离子碰撞中相同测量的系统性。

英文摘要:

The azimuthal collimation of di-hadrons with large rapidity separations in high multiplicity p+p collisions at the LHC is described in the Color Glass Condensate (CGC) effective theory [1] by N_c^2 suppressed multi-ladder QCD diagrams that are enhanced α_S^(-8) due to gluon saturation in hadron wavefunctions. We show that quantitative computations in the CGC framework are in good agreement with data from the CMS experiment on per trigger di-hadron yields and predict further systematics of these yields with varying trigger pT and charged hadron multiplicity. Radial flow generated by re-scattering is strongly limited by the structure of the p+p di-hadron correlations. In contrast, radial flow explains the systematics of identical measurements in heavy ion collisions.

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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