S and T for Leptoquarks and Bileptons
High Energy Physics - Phenomenology
2007-05-23 v2
Abstract
We calculate contributions to the oblique parameters and for leptoquarks and bileptons, and find phenomenological constraints on their allowed masses. Leptoquarks suggested by the neutral and charged current anomalies at HERA can give improved agreement with both and . If bileptons are the only new states, the singly-charged one must be heavier than the directly-established lower limit. We also consider SU(15) grand unification to find when it can be consistent with precision electroweak measurements.
Cite
@article{arxiv.hep-ph/9711282,
title = {S and T for Leptoquarks and Bileptons},
author = {Paul H. Frampton and Masayasu Harada},
journal= {arXiv preprint arXiv:hep-ph/9711282},
year = {2007}
}
Comments
4 pages RevTex. 2 figures (gz.tar) included at end. In replacement, only report no. changed