Scalar boson decay in presence of magnetic fields

Abstract

We analyze the decay of a heavy scalar boson to two light‐charged scalars, in presence of a uniform, constant magnetic field. The effect of magnetic fields on the particle decay process has been studied in many contexts, in the presence of different ingredients and with a variety of methods. After reviewing some results that can be found in the literature, we present our findings and discuss the differences.

Magnetic field effect on the decay process of a neutral scalar boson to charged fermions

“…In particular, our research group has been interested in the decay of a scalar particle, in the weak magnetic field approximation, to explore a scenario that can be applied to early universe events. We have, up to now, looked into the rôle of the decay products spin and of the kinematics of the progenitor particle (Jaber‐Urquiza et al ; Piccinelli & Sánchez ; Piccinelli & Sánchez ).…”

“…Keeping in mind that the assortment of physical situations considered in the literature is undoubtedly relevant for the interaction process between magnetic fields and pair creation, it is nonetheless puzzling that the results are not always coincident: This process is enhanced in some cases (Bali et al ; Bandyopadhyay and Mallik ; Bhattacharya and Sahu ; Erdas and Lissia ; Kuznetsov et al , ; Mikheev and Chistyakov ; Satunin ; Tsai and Erber, , ; Urrutia ) It is inhibited in some others (Bandyopadhyay et al ; Kawaguchi and Matsuzaki ; Sogut et al ) It has a mixed behavior, depending on the kinematical regime of the progenitor particle (Chistyakov et al ; Ghosh et al ; Piccinelli & Sánchez ) …”