Tuesday, May 29, 2012

1205.6108 (E. G. de Oliveira et al.)

Drell-Yan as a probe of small x partons at the LHC    [PDF]

E. G. de Oliveira, A. D. Martin, M. G. Ryskin
The predictions of Drell-Yan production of low-mass, lepton-pairs, at high rapidity at the LHC, are known to depend sensitively on the choice of factorization and renormalization scales. We show how this sensitivity can be greatly reduced by fixing the factorization scale of the LO contribution based on the known NLO matrix element, so that observations of this process at the LHC can make direct measurements of parton distribution functions in the low x domain; x less than about 10^{-4}.
View original: http://arxiv.org/abs/1205.6108

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