PreprintCC BY 4.0arXiv
CP-odd form factor in the HWW vertex
Abstract
We revisit the CP-odd form factor in the HWW 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 10−5, well below the current experimental sensitivity. The phenomenological implications are studied through asymmetries in unpolarized and polarized observables in three-body decays.
Versions
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BibTeX
@misc{hernandezjuarez2026cpodd,
title = {{$CP$-odd form factor in the $HWW$ vertex}},
author = {A. I. Hernández-Juárez and G. Tavares-Velasco and J. Martínez-Ramón},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2608.17106},
eprint = {2608.17106},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.17106},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - CP-odd form factor in the HWW vertex
AU - A. I. Hernández-Juárez
AU - G. Tavares-Velasco
AU - J. Martínez-Ramón
PY - 2026
DA - 2026/08/17
PB - arXiv
DO - 10.48550/arxiv.2608.17106
UR - https://arxiv.org/abs/2608.17106
AB - We revisit the CP-odd form factor in the HWW 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 10^−5, well below the current experimental sensitivity. The phenomenological implications are studied through asymmetries in unpolarized and polarized observables in three-body decays.
ER -