Constraining spin-dependent short range interactions using neutron spin precession close to a mirror

TL;DR

This paper proposes a highly sensitive method to detect spin-dependent short-range interactions of neutrons with matter by observing pseudomagnetic precession of ultracold neutrons near a mirror, surpassing previous techniques.

Contribution

It introduces a novel approach using neutron spin precession close to a mirror to improve sensitivity in detecting short-range interactions.

Findings

Potential to detect interactions several orders of magnitude weaker than current methods

Method offers a new experimental avenue for probing fundamental neutron-matter interactions

Enhances the precision of tests for physics beyond the Standard Model

Abstract

Spin-dependent short range interactions of free neutrons with matter may be searched for in various ways. This short note discusses pseudomagnetic precession of trapped ultracold neutrons in vicinity to bulk matter, which should be several orders of magnitude more sensitive than any other method proposed so far.