IR Constraints on Gyromagnetic Ratios

Abstract

In Bosonic, Heterotic and Type II theories, by employing soft theorems and string techniques, we analyze the gyromagnetic ratios of massive high spin particles coupled to Abelian gauge fields arising from the compactification of the metric and Kalb-Ramond fields. We derive a universal form for such couplings showing that mixed symmetry states of the leading Regge-trajectory, described by a Young-tableau with two rows, have a gyromagnetic ratio associated with each row.

15 pages, 2 figures, Contribution to Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity" 29 August - 9 October 2021 Corfu, Greece