R. Gait'an

activity

20242026

collaborators

6 papers

hep-ph2026

Searching for the LFV $I^^{3} I^^{3} e I^¼$ interaction at future $e^{-} e^{+}$ colliders

M. A. Arroyo-UreÃ±a, R. GaitÃ¡n, Marcela MarÃn +2

We investigate the Lepton Flavor Violating (LFV) process $e^{+} e^{-} \to e^{+} e^{-} e I^¼$ ( $e = e^{-}, e^{+}, I^¼ = I^¼^{-}, I^¼^{+}$ ) at future circular colliders, probing the effective $Î³Î³eÎ…

hep-ph2025

Non-diagonal contributions to $Z I^^{3} V^{*}$ vertex, polarizations and bounds on $Z t q$ couplings

A. I. HernÃ¡ndez-JuÃ¡rez, G. Tavares-Velasco, R. GaitÃ¡n

We study the flavor-changing neutral current contributions to the trilinear neutral gauge boson couplings $Z I^^{3} V^{*}$ ( $V = Z$ , $I^^{3}$ ) at the one-loop level. Only the $C P$ -conserving…

hep-ph2025

$C P$ violation in the $H Z Z$ vertex and left-right asymmetries

A. I. HernÃ¡ndez-JuÃ¡rez, R. GaitÃ¡n

We investigate new contributions to the $H Z Z$ vertex from the Flavor Changing Neutral Current (FCNC) involving the Higgs and $Z$ bosons. Our calculations reveal that the form facto…

hep-ph2025

Light quark contributions to Higgs decays

A. I. HernÃ¡ndez-JuÃ¡rez, R. GaitÃ¡n, R. Martinez

The literature establishes that the light fermions contributions to the decays $H \to Z I^^{3}$ and $H \to I^^{3} I^^{3}$ are negligible since their coupling with the Higgs is proportional to $m_{f}$ …

hep-ph2025

$H \to Z I^^{3}$ decay and $C P$ violation

A. I. HernÃ¡ndez-JuÃ¡rez, R. GaitÃ¡n, R. Martinez

This study examines the impact of $C P$ -violation on the signal strength $I^¼^{Z I^^{3}}$ , which was reported as $2.2 \pm 0.7$ by the LHC. We obtain constraints on the real and absorptive…

hep-ph2024

Lepton Flavor-Violating Higgs Decays Mediated by Ultralight Gauge Boson

Marcela MarÃn, R. GaitÃ¡n, R. Martinez

We present an analysis of the lepton-flavor violating decay of the Higgs boson mediated by an ultralight gauge boson, $I ¨ $ . Our analysis matches a model generating the lepton flavo…

Searching for the LFV I^3I^3eI^¼ interaction at future e−e+ colliders

Non-diagonal contributions to ZI^3V∗ vertex, polarizations and bounds on Ztq couplings

CP violation in the HZZ vertex and left-right asymmetries

Light quark contributions to Higgs decays

H→ZI^3 decay and CP violation

Lepton Flavor-Violating Higgs Decays Mediated by Ultralight Gauge Boson

Searching for the LFV $I^^{3} I^^{3} e I^¼$ interaction at future $e^{-} e^{+}$ colliders

Non-diagonal contributions to $Z I^^{3} V^{*}$ vertex, polarizations and bounds on $Z t q$ couplings

$C P$ violation in the $H Z Z$ vertex and left-right asymmetries

$H \to Z I^^{3}$ decay and $C P$ violation