Single top polarisation as a window to new physics
High Energy Physics - Phenomenology
2017-04-19 v2 High Energy Physics - Experiment
Abstract
We discuss the effect of heavy new physics, parameterised in terms of four-fermion operators, in the polarisation of single top (anti-)quarks in the -channel process at the LHC. It is found that for operators involving a right-handed top quark field the relative effect on the longitudinal polarisation is twice larger than the relative effect on the total cross section. This enhanced dependence on possible four-fermion contributions makes the polarisation measurements specially interesting, in particular at high momenta.
Cite
@article{arxiv.1701.05900,
title = {Single top polarisation as a window to new physics},
author = {J. A. Aguilar-Saavedra and C. Degrande and S. Khatibi},
journal= {arXiv preprint arXiv:1701.05900},
year = {2017}
}
Comments
LaTeX 10 pages. v2: comments and references added, journal version