Abstract
Aspects of a flavor-changing W' model with right-handed couplings are addressed in this paper in light of Tevatron and LHC data. Our fit to the Tevatron top-quark forward-backward asymmetry and the tt_bar inclusive cross section includes higher-order loop effects in the effective interaction. The higher order corrections change the best fit value of the W' effective coupling strength as a function of the W' mass. The consistency of the model is checked against the shape of the tt_bar invariant mass distribution. We use these updated W' parameters to compute the expected contributions from W't associated production and, for the first time, W'W' pair production at the LHC. We do a full Monte Carlo simulation of the tt_bar+X final state, including interference between the tW' induced tt_bar j process and the standard model tt_bar j process. Interference effects are shown to be quantitatively important, particularly when the W' mass is large. The jet multiplicity distribution in tt_bar-jet production at 8 TeV constrains the W' model severely.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
