Searches for Exotic Interactions Using Neutron Spin Rotation

TL;DR

This paper investigates the potential existence of exotic interactions mediated by hypothesized particles, using neutron spin rotation measurements to set limits and explore implications for gravitational torsion.

Contribution

It provides new experimental limits on weakly coupled sub-eV particles and demonstrates how neutron spin rotation can be used to search for exotic interactions beyond the Standard Model.

Findings

Set new limits on interaction strengths mediated by hypothetical particles.

Demonstrated the use of neutron spin rotation to probe exotic interactions.

Explored implications for gravitational torsion in matter.

Abstract

Various theories beyond the Standard Model predict new particles with masses in the sub-eV range with very weak couplings to ordinary matter. I present both measured and projected limits on the strengths of two possible interactions that could be mediated by these new particles, and how one may additionally use these results to search for in matter gravitational torsion.