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arXiv · hep-ph/9711282

S and T for Leptoquarks and Bileptons

Paul H. Frampton·Masayasu Harada
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Abstract

We calculate contributions to the oblique parameters $S$ and $T$ 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 $S$ and $T$. 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.

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Paul H. Frampton, Masayasu Harada. 1997-11-12. S and T for Leptoquarks and Bileptons. https://arxiv.org/abs/hep-ph/9711282

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