Higgs flavor violation as a signal to discriminate models

• Autor(a) principal: Lima, L. de [UNESP]
• Data de Publicação: 2015
• Outros Autores: Machado, C. S. [UNESP], Matheus, R. D. [UNESP], Prado, L. A. F. do [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1007/JHEP11(2015)074; http://hdl.handle.net/11449/161125
• topic: Higgs Physics; Rare Decays; Beyond Standard Model

We consider the Higgs Lepton Flavor Violating process h -> tau mu, in which CMS found a 2.5 sigma excess of events, from a model independent perspective, and find that it is difficult to generate this operator without also obtaining a sizeable Wilson coefficient for the dipole operators responsible for tau radiative decay, constrained by BABAR to BR(tau -> mu gamma) < 4.4 x 10(-8). We then survey a set of representative models for new physics, to determine which ones are capable of evading this problem. We conclude that, should this measurement persist as a signal, type-III Two Higgs Doublet Models and Higgs portal-like models are favored, while SUSY and Composite Higgs models are unlikely to explain it.