Hidden GeV-scale interactions of quarks
High Energy Physics - Phenomenology
2014-08-13 v2
Abstract
We explore quark interactions mediated by new gauge bosons of masses in the 0.3 - 50 GeV range. A tight upper limit on the gauge coupling of light Z' bosons is imposed by the anomaly cancellation conditions in conjunction with collider bounds on new charged fermions. Limits from quarkonium decays are model dependent, while electroweak constraints are mild. We derive the limits for a Z' boson coupled to baryon number, and then construct a Z' model with relaxed constraints, allowing quark couplings as large as 0.2 for a mass of a few GeV.
Cite
@article{arxiv.1404.3947,
title = {Hidden GeV-scale interactions of quarks},
author = {Bogdan A. Dobrescu and Claudia Frugiuele},
journal= {arXiv preprint arXiv:1404.3947},
year = {2014}
}
Comments
5 pages; v2: Corrections in Eqs. (5), (6), and in Fig. 1