Higgs--mediated K -> pi nu nu-bar in the MSSM at large tan(beta)
High Energy Physics - Phenomenology
2009-11-11 v1
Abstract
We analyze the impact of Higgs-mediated amplitudes on the rare decays KL -> pi0 nu nu-bar and K+ -> pi+ nu nu-bar in the MSSM with large tan(beta) and general flavour mixing. We point out that, going beyond the minimal flavour violation hypothesis, Z-penguin amplitudes generated by charged-Higgs exchange can induce sizable modifications of K -> pi nu nu-bar rates. Interestingly, these effects scale as tan^4(beta) at the amplitude level. For large values of tan(beta), this mechanism allows deviations from the SM expectations even for tiny (CKM-type) off-diagonal mixing terms in the right-handed squark sector.
Keywords
Cite
@article{arxiv.hep-ph/0601094,
title = {Higgs--mediated K -> pi nu nu-bar in the MSSM at large tan(beta)},
author = {G. Isidori and P. Paradisi},
journal= {arXiv preprint arXiv:hep-ph/0601094},
year = {2009}
}
Comments
9 pages, 2 figures