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arXiv · 1212.3135

Improving the Drell-Yan probe of small x partons at the LHC via a k_t cut

E. G. de Oliveira·A. D. Martin·M. G. Ryskin
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Abstract

We show that the observation of the Drell-Yan production of low-mass lepton-pairs (M < 20 GeV) at high rapidities (Y > 3) at the LHC can make a direct measurement of parton distribution functions (PDFs) in the low x region, x < 10^{-4}. We describe a procedure that greatly reduces the sensitivity of the predictions to the choice of the factorization scale and, in particular, show how, by imposing a cutoff on the transverse momentum of the lepton-pair, the data are able to probe PDFs in the important low scale, low x domain. We include the effects of the Sudakov suppression factor.

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E. G. de Oliveira, A. D. Martin, M. G. Ryskin. 2013-03-07. Improving the Drell-Yan probe of small x partons at the LHC via a k_t cut. https://doi.org/10.1140/epjc%2Fs10052-013-2361-6

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