Strange mesons in strong magnetic fields

TL;DR

This paper investigates how strong magnetic fields affect the masses and decay widths of strange mesons, revealing mass mixing effects and potential observable consequences in high-energy collisions.

Contribution

It introduces a field theoretic model to study mass modifications and decay widths of strange mesons in strong magnetic fields, highlighting mixing effects and experimental implications.

Findings

Masses of $K$, $K^*$, and $\,phi$ mesons are altered by magnetic fields.

Decay widths of $\,phi ightarrow Kar K$ and $K^* ightarrow K\,pi$ are affected.

Mass mixing effects are significant in strong magnetic environments.

Abstract

The masses of the strange mesons ($K$, $K^*$ and $\phi$) are investigated in the presence of strong magnetic fields. The changes in the masses of these mesons arise from the mixing of the pseusdoscalar and vector mesons in the presence of a magnetic field. For the charged mesons, these mass modifications are in addition to the contributions from the lowest Landau energy levels to their masses. The decay widths, $\phi \rightarrow K\bar K$ and $K^* \rightarrow K\pi$, in the presence of the magnetic field are studied using a field theoretic model of composite hadrons with constituent quarks/antiquarks. The model uses the free Dirac Hamiltonian in terms of the constituent quark fields as the light quark antiquark pair creation term and explicit constructions for the meson states in terms of the constituent quarks and anitiquarks to study the decay processes. The study of the masses and decay widths of the strange mesons in strong magnetic fields can have observable consequences on the production of the open and hidden strange mesons in the peripheral ultra high energy collisions at LHC, where the created magnetic field can be huge.