arXiv:2608.17106·v1·High Energy Physics — Phenomenology

$C P$ -odd form factor in the $H W W$ vertex

A.I. Hernández-Juárez🇲🇽 · G. Tavares-Velasco🇲🇽 · J. Martínez-Ramón🇲🇽

Abstract

We revisit the $C P$ -odd form factor in the $H W W$ vertex within the Standard Model (SM), which is induced only at the one-loop level when one of the $W$ bosons is off-shell. To the best of our knowledge, the numerical evaluation of this form factor is presented for the first time. The relevant contributions from quark loops are of order $1 0^{- 5}$ , well below the current experimental sensitivity. The phenomenological implications are studied through asymmetries in unpolarized and polarized observables in three-body decays.

Comments: Accepted for publication in Physical Review D

CP-odd form factor in the HWW vertex

Abstract

$C P$ -odd form factor in the $H W W$ vertex