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hep-ph2026

Magnetic field modifications to the pion-quark vertex in the Linear Sigma Model with quarks

Alejandro Ayala, Flávia Fialho, Adrián Lara +2

We compute the modification to the quark-neutral pion vertex, induced by a constant and uniform magnetic field, using the Linear Sigma Model with quarks as a low energy effective t…

hep-ph2025

Asymmetric muon-antimuon emission from decays: a clear magnetometer in relativistic heavy-ion collisions

Alejandro Ayala, Ana Julia Mizher, Javier Rendón

We show that a very clear signal of the presence of a strong magnetic field during the early stage of a high-energy heavy-ion collision is provided by the decay of the into d…

hep-ph2024

Authentic Majorana versus singlet Dirac neutrino contributions to transitions

Jorge Luis Gutiérrez Santiago, G. Hernández-Tomé, Diego Portillo-Sánchez +1

We revisited the computation of the cross section for the transitions in the presence of new heavy Majorana neutrinos. We focus…

hep-ph2024

Relaxation time for the alignment between quark spin and angular velocity in a rotating QCD medium

Alejandro Ayala, Santiago Bernal-Langarica, Isabel Domínguez Jiménez +4

We compute the relaxation times for massive quarks and anti-quarks to align their spins with the angular velocity in a rigidly rotating medium at finite temperature and baryon dens…

hep-ph2024

Magnetic field dependence of the neutral pion longitudinal screening mass in the linear sigma model with quarks

Alejandro Ayala, Ricardo L. S. Farias, L. A. Hernández +4

We use the linear sigma model with quarks to study the magnetic-field-induced modifications on the longitudinal screening mass for the neutral pion at one-loop level. The effects o…