$n$-$\bar{n}$ oscillations and the neutron lifetime

Abstract

Neutron-antineutron oscillations are considered in the light of recently proposed particle models, which claim to resolve the neutron lifetime anomaly, indicating the existence of baryon violating $\Delta B=1$ interactions. Possible constraints are derived coming from the non-observation of neutron-antineutron oscillations, which can take place if the dark matter particle produced in neutron decay happens to be a Majorana fermion. It is shown that this can be realised in a simple MSSM extention where only the baryon number violating term $u^c{d}^c{d}^c$ is included whilst all other R-parity violating terms are prevented to avoid rapid proton decay. It is demostrated how this scenario can be implemented in a string motivated GUT broken to MSSM by fluxes.

17 pages, updated version, references added

References in corpus (11)

• Dark Matter Interpretation of the Neutron Decay Anomaly
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Cited by in corpus (4)

• Exotic decay channels are not the cause of the neutron lifetime anomaly
• Neutron Decay to a Non-Abelian Dark Sector
• A New Neutron Lifetime Experiment with Cold Neutron Beam Decay in Superfluid Helium-4
• R-parity violation and 8 TeV four-jet events at the LHC