Constraining wrong-sign hbb couplings with h→ϒγ

2016/07/26 by Tanmoy Modak, Jorge C. Romão, Soumya Sadhukhan +2
Computer Science · Medicine · Physics and Astronomy · #Chronic Lymphocytic Leukemia Research #Coding theory and cryptography #Computer science #Cryptography and Residue Arithmetic #hep-ex #hep-ph

paper · pdf · doi:10.1103/physrevd.94.075017

published as Phys. Rev. D 94, 075017 (2016) · 7 pages, 3 figures

arxiv created 2016/07/26 · openalex created_date 2016/08/23 · openalex publication_date 2016/10/27 · arxiv updated 2016/11/02 · openalex updated_date 2026/08/05

Abstract

The rare decay h\ensuremath→\mathrm\ensuremathΥ\ensuremathγ has a very small rate in the Standard Model, due to a strong cancellation between the direct and indirect diagrams. Models with a changed hbb coupling can thus lead to a great increase in this decay. Current limits on two Higgs doublet models still allow for the possibility that the hbb coupling might have a sign opposite to the Standard Model, the so-called ``wrong-sign.'' We show how h\ensuremath→\mathrm\ensuremathΥ\ensuremathγ can be used to put limits on the wrong-sign solutions.

Citations

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Lee-Quigg-Thacker bounds for Higgs boson masses in a two-doublet model
• The oblique parameters in multi-Higgs-doublet models
• Relativistic corrections to Higgs boson decays to quarkonia
• Theory and phenomenology of two-Higgs-doublet models
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC