Internal structure modification and decay of hadrons in strong magnetic field

Abstract

We discuss the influence of external magnetic field on strong decays of [Formula: see text], [Formula: see text] and [Formula: see text] mesons. Due to increasing energy of [Formula: see text] Landau level of charged decay products, particular decay channels may become suppressed and isospin rules for strong decays can be violated. In the case of [Formula: see text] meson, enhanced production of photons and dileptons (with modified invariant mass) may occur. Similar considerations are applied to decays of [Formula: see text] baryon. We also suggest that static electromagnetic field of sufficient strength can modify the internal structure (wavefunction) of [Formula: see text] J/[Formula: see text] and [Formula: see text] mesons, and specific decay channels (e.g. CP — violating [Formula: see text]) can become enhanced.