Single Top Production at Next-to-Leading Order in the Standard Model Effective Field Theory

Cen Zhang
Phys. Rev. Lett. 116, 162002 – Published 21 April 2016

Abstract

Single top production processes at hadron colliders provide information on the relation between the top quark and the electroweak sector of the standard model. We compute the next-to-leading order QCD corrections to the three main production channels: t-channel, s-channel, and tW associated production, in the standard model including operators up to dimension six. The calculation can be matched to parton shower programs and can therefore be directly used in experimental analyses. The QCD corrections are found to significantly impact the extraction of the current limits on the operators, because both of an improved accuracy and a better precision of the theoretical predictions. In addition, the distributions of some of the key discriminating observables are modified in a nontrivial way, which could change the interpretation of measurements in terms of UV complete models.

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  • Received 28 January 2016

DOI:https://doi.org/10.1103/PhysRevLett.116.162002

© 2016 American Physical Society

Physics Subject Headings (PhySH)

  1. Physical Systems
Particles & Fields

Authors & Affiliations

Cen Zhang

  • Department of Physics, Brookhaven National Laboratory, Upton, New York 11973, USA

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Issue

Vol. 116, Iss. 16 — 22 April 2016

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