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arXiv 1808.09511hep-ph
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在具有共线修正的BFKL形式体系中LHC的正向Drell-Yan产生

Forward Drell-Yan production at the LHC in the BFKL formalism with collinear corrections

F. G. Celiberto, D. Gordo Gómez, A. Sabio Vera

摘要:

受Brzemienski,Motyka,Sadzikowski和Stebel在arXiv:1611.04449中研究质子-质子碰撞中前向Drell-Yan产生的工作的启发,我们通过引入在arXiv:1209.1353和arXiv:1301.5283中得到的未积分胶子密度来改进他们的计算,该胶子密度是在Bjorken $x$的小值下拟合组合HERA数据得到的。这个胶子密度是在BFKL形式体系中计算的,在次领先阶下进行共线修正。我们表明,它产生了一个很好的描述的前向Drell-Yan截面依赖于不变质量的轻子对LHCb和ATLAS数据。

英文摘要:

Motivated by the recent work of Brzemiński, Motyka, Sadzikowski and Stebel in arXiv:1611.04449, where forward Drell--Yan production is studied in proton-proton collisions at the LHC, we improve their calculation by introducing an unintegrated gluon density obtained in arXiv:1209.1353 and arXiv:1301.5283 from a fit to combined HERA data at small values of Bjorken $x$. This gluon density was calculated within the BFKL formalism at next-to-leading order with collinear corrections. We show that it generates a good description of the forward Drell--Yan cross section dependence on the invariant mass of the lepton pair both for LHCb and ATLAS data.

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