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arXiv · 1211.3357

The LHC can probe small x PDFs; the treatment of the infrared region

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

First, we show how to reduce the sensitivity of the NLO predictions of the Drell-Yan production of low-mass, lepton-pairs, at high rapidity, to the choice of factorization scale. In this way, observations of this process at the LHC can make direct measurements of parton distribution functions in the low x domain; x < 10^{-4}. Second, we find an inconsistency in the conventional NLO treatment of the infrared region. We illustrate the problem using the NLO coefficient function of Drell-Yan production.

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A. D. Martin, E. G. de Oliveira, M. G. Ryskin. 2012-11-14. The LHC can probe small x PDFs; the treatment of the infrared region. https://doi.org/10.1063/1.4802103

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