Charge asymmetry in W + jets production at the LHC

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 σ(W^+ + n jets)/σ(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.

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

References in corpus (6)

• Parton distributions for the LHC
• Implications of CTEQ global analysis for collider observables
• Next-to-Leading Order QCD Predictions for W+3-Jet Distributions at Hadron Colliders
• Higgs Boson Production in Association with Multiple Hard Jets
• A New Framework for Multijet Predictions and its application to Higgs Boson production at the LHC
• On the role of NLL corrections and Energy Conservation in the High Energy Evolution of QCD

Cited by in corpus (8)

• Precise Predictions for W + 4 Jet Production at the Large Hadron Collider
• Measurement of the charge asymmetry in top quark pair production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• Measurements of normalized differential cross-sections for ttbar production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
• Differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at $\sqrt{s}=7$ TeV in the ATLAS detector
• Search for Dark Matter Produced in Association with a Higgs Boson Decaying to $b\bar{b}$ using 36 fb${}^{-1}$ of $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS Detector
• Extrapolating W-Associated Jet-Production Ratios at the LHC
• Investigating the Quantum Properties of Jets and the Search for a Supersymmetric Top Quark Partner with the ATLAS Detector
• Charge asymmetry ratio as a probe of quark flavour couplings of resonant particles at the LHC