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

George Fai·Jianwei Qiu·Xiaofei Zhang
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Abstract

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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George Fai, Jianwei Qiu, Xiaofei Zhang. 2004-03-11. Probing small-x gluons by low-mass Drell-Yan pairs at RHIC and LHC. https://doi.org/10.1088/0954-3899%2F30%2F8%2F054

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