Quark-flavour violating Higgs decays to charm and bottom pairs in the MSSM

Author(s)
E. Ginina, H. Eberl, A. Bartl, K. Hidaka, W. Majerotto
Abstract

We calculate the decay width of h(0) -> b (b) over bar in the Minimal Supersymmetric Standard Model (MSSM) with quark flavour violation (QFV) at full one-loop level. The effect of (c) over tilde-(t) over tilde mixing and (s) over tilde-(b) over tilde mixing is studied taking into account the constraints from the B-meson data. We discuss and compare in detail the decays h(0) -> c (c) over bar and h(0) -> b (b) over bar within the framework of the perturbative mass insertion technique using the Flavour Expansion Theorem. The deviation of both decay widths from the Standard Model results can be quite large. While in h(0) -> c (c) over bar it is almost entirely due to the flavour violating part of the MSSM, in h(0) -> b (b) over bar it is mainly due to the flavour conserving part. Nevertheless, Gamma(h(0) -> b (b) over bar) can fluctuate up to similar to 7% due to QFV chargino exchange with large (c) over tilde - (t) over tilde mixing.

Organisation(s)
Particle Physics
External organisation(s)
Österreichische Akademie der Wissenschaften (ÖAW), Tokyo Gakugei University (TGU)
Journal
Nuclear and Particle Physics Proceedings
Volume
285-286
Pages
166-171
No. of pages
6
ISSN
2405-6014
DOI
https://doi.org/10.1016/j.nuclphysbps.2017.03.030
Publication date
2017
Peer reviewed
Yes
Austrian Fields of Science 2012
103012 High energy physics
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/quarkflavour-violating-higgs-decays-to-charm-and-bottom-pairs-in-the-mssm(1b703175-cfd1-4ba5-bf18-231573e7fab4).html