Neutron-Antineutron Oscillations in a Warped Extra Dimension

TL;DR

This paper explores neutron-antineutron oscillations within a warped extra dimension framework, showing that such oscillations can be suppressed to current experimental limits with a low mass scale, without fine tuning.

Contribution

It provides a calculation of effective operator strengths in a Randall-Sundrum scenario and demonstrates geometric suppression of baryon number violation operators.

Findings

Operators can be suppressed without fine tuning.

Suppression allows for a low warped mass scale, as low as a fraction of a TeV.

QCD 1-loop effects enhance the operators.

Abstract

We investigate neutron-antineutron oscillations in the Randall-Sundrum warped extra dimensional scenario. The four dimensional effective strengths of the relevant operators that induce the oscillations are calculated up to an arbitrary coupling along with their corresponding enhancements due to QCD 1-loop running effects. We find that the $\Delta B = 2$ operators can be geometrically suppressed without fine tuning to within current experimental limits with a warped down four dimensional mass scale which can be as low as a fraction of a TeV.