Drell–Yan as a probe of small x partons at the LHC
Abstract
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≲10‑4.
- Publication:
-
European Physical Journal C
- Pub Date:
- July 2012
- DOI:
- 10.1140/epjc/s10052-012-2069-z
- arXiv:
- arXiv:1205.6108
- Bibcode:
- 2012EPJC...72.2069D
- Keywords:
-
- Momentum Fraction;
- DGLAP Evolution;
- NNLO Contribution;
- Hard Matrix Element;
- Renormalization Scale Ambiguity;
- High Energy Physics - Phenomenology
- E-Print:
- 11 pages, 5 figures