Flavor-changing neutral current in production and decay of pseudoscalar mesons in a type III two-Higgs-doublet-model with four-texture Yukawa couplings - High Energy Physics - Phenomenology

Flavor-changing neutral current in production and decay of pseudoscalar mesons in a type III two-Higgs-doublet-model with four-texture Yukawa couplings - High Energy Physics - Phenomenology - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: We study flavor violating processes in the production or decay of a neutralpseudoscalar meson $P^0$ in the framework of a general two Higgs Doublet Modeltype III 2HDM-III. We use a version of the model where Yukawa interactions ofneutral Higgs bosons allow for flavor change at the tree-level, but conservesCP symmetry. We focus on all possible $\tau^{\pm} \to l^{\pm}P^0$ and $P^0 \tol^+l-^-$ decay channels, where $l,l-$ are charged leptons. We find that theseprocesses provide complementary information on quark and lepton FCNC Yukawacouplings. In particular flavor violating parameters in the quark sector,$\chi {sb}$ and $\chi {db}$, are significantly constrained by presentexperimental data, whereas the corresponding parameters in the leptonic sectorare less constrained.

Autor: M. Gomez-Bock, G. Lopez-Castro, L. Lopez-Lozano, A. Rosado

Fuente: https://arxiv.org/