Charge asymmetry in W + jets production at the LHC
High Energy Physics - Phenomenology
2011-03-28 v3
Abstract
The charge asymmetry in W + jets production at the LHC can serve to calibrate the presence of New Physics contributions. We study the ratio {\sigma}(W^+ + n jets)/{\sigma}(W^- + n jets) in the Standard Model for n <= 4, paying particular attention to the uncertainty in the prediction from higher-order perturbative corrections and uncertainties in parton distribution functions. We show that these uncertainties are generally of order a few percent, making the experimental measurement of the charge asymmetry ratio a particularly useful diagnostic tool for New Physics contributions.
Keywords
Cite
@article{arxiv.1004.3404,
title = {Charge asymmetry in W + jets production at the LHC},
author = {C. H. Kom and W. J. Stirling},
journal= {arXiv preprint arXiv:1004.3404},
year = {2011}
}
Comments
13 pages, 7 figures. Reference added. Slightly modified text