Probing small-x gluons by low-mass Drell-Yan pairs at RHIC and LHC

Details Probing small-x gluons by low-mass Drell-Yan pairs at RHIC and LHC Probing small-x gluons by low-mass Drell-Yan pairs at RHIC and LHC

2004-03-11

arxiv.org/abs/hep-ph/0403126v1

J.Phys. G30 (2004) S1037-S1042

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in the proceedings of the seventeenth international conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Qua

Scientific paper

10.1088/0954-3899/30/8/054

We calculate the transverse momentum distribution of low-mass Drell-Yan pairs in QCD perturbation theory with all-order resummation. We demonstrate that the transverse momentum distribution of low-mass Drell-Yan pairs is an advantageous source of constraints on the gluon distribution and its nuclear dependence. With the reduction in background, we argue that low-mass Drell-Yan pairs in the forward region provide a good and clean probe of small-x gluons at RHIC and LHC.

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