The t->cH decay width in the standard model

TL;DR

This paper calculates the decay width of the top quark to a charm quark and Higgs boson within the Standard Model, providing corrected numerical estimates for the branching fraction.

Contribution

It offers a revised and more accurate computation of the t->cH decay width, correcting previous numerical evaluations in the literature.

Findings

Branching fraction B(t->cH) ~ 10^{-13} - 10^{-14}

Decay width calculations for light Higgs boson

Corrected numerical estimates in the literature

Abstract

The t->cH decay width has been computed in the standard model with a light Higgs boson. The corresponding branching fraction has been found to be in the range B(t->cH) ~ 10^{-13} - 10^{-14} for M_Z < m_H < 2 M_W. Our results correct the numerical evaluation usually quoted in the literature.