Two Higgs Pair Heterotic Vacua and Flavor-Changing Neutral Currents
High Energy Physics - Theory
2008-11-26 v2
Abstract
We present a vacuum of heterotic M-theory whose observable sector has the MSSM spectrum with the addition of one extra pair of Higgs-Higgs conjugate superfields. The quarks/leptons have a realistic mass hierarchy with a naturally light first family. The double elliptic structure of the Calabi-Yau compactification threefold leads to two ``stringy'' selection rules. These classically disallow Yukawa couplings to the second Higgs pair and, hence, Higgs mediated flavor-changing neutral currents. Such currents are induced in higher-dimensional interactions, but are naturally suppressed. We show that our results fit comfortably below the observed upper bounds on neutral flavor-changing processes.
Keywords
Cite
@article{arxiv.0807.3319,
title = {Two Higgs Pair Heterotic Vacua and Flavor-Changing Neutral Currents},
author = {Michael Ambroso and Volker Braun and Burt A. Ovrut},
journal= {arXiv preprint arXiv:0807.3319},
year = {2008}
}
Comments
52 pages, 3 figures, 1 table, requires feynmf