Corrections to (Pseudo)Scalars Decay into a Fermion Pair from Gravitational Torsion

Rojas Abatte, Felipe (Centro Científico Tecnológico de Valparaíso, Casilla 110-V, Valparaíso, Chile) ; Zamora-Saa, Jilberto (Dzhelepov Laboratory of Nuclear Problems, Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russian Federation) ; Castillo-Felisola, Oscar (Centro Científico Tecnológico de Valparaíso, Casilla 110-V, Valparaíso, Chile) ; Díaz, Bastian (Centro Científico Tecnológico de Valparaíso, Casilla 110-V, Valparaíso, Chile) ; Zerwekh, Alfonso R. (Centro Científico Tecnológico de Valparaíso, Casilla 110-V, Valparaíso, Chile)

31 January 2018

Abstract: We study the contribution of the torsion-descendent four-fermion contact interaction to the decay width of a neutral (pseudo)scalar field into a fermion pair. This new interaction comes from the existence of gravitational torsion in models with extra dimensions. Additionally, we exemplify the formalism by studying two cases: first, the variation of the considered branching ratio of the Higgs in the context of the Standard Model, and second the proper variations of the scalar and pseudoscalar fields of the type II-1 two-Higgs doublets model.


Published in: Acta Physica Polonica B 49 (2018) 41-57
Published by: Jagiellonian University
DOI: 10.5506/APhysPolB.49.41
arXiv: 1704.08879
License: CC-BY-4.0



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