Charge asymmetry in W + jets production at the LHC

Details Charge asymmetry in W + jets production at the LHC Charge asymmetry in W + jets production at the LHC

2010-04-20

arxiv.org/abs/1004.3404v3

Eur.Phys.J.C69:67-73,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 7 figures. Reference added. Slightly modified text

Scientific paper

10.1140/epjc/s10052-010-1353-z

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.

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