Right-Handed Neutrinos and T-Violating, P-Conserving Interactions

Abstract

We show that experimental probes of the P-conserving, T-violating triple correlation in polarized neutron or nuclear $\beta$-decay provide a unique probe of possible T-violation at the TeV scale in the presence of right-handed neutrinos. In contrast to other possible sources of semileptonic T-violation involving only left-handed neutrinos, those involving right-handed neutrinos are relatively unconstrained by present limits on the permanent electric dipole moments of the electron, neutral atoms, and the neutron. On the other hand, LHC results for $pp\to e+$ missing transverse energy imply that an order of magnitude of improvement in $D$-coefficient sensitivity would be needed for discovery. Finally, we discuss the interplay with the scale of neutrino mass and naturalness considerations.

6 pages, 2 figures

References in corpus (5)

• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• A Revised Experimental Upper Limit on the Electric Dipole Moment of the Neutron
• Reduced Limit on the Permanent Electric Dipole Moment of ${}^{199}$Hg
• Electric Dipole Moments: A Global Analysis
• Neutrino Mass Implications for Muon Decay Parameters

Cited by in corpus (5)

• Particle Physics at the European Spallation Source
• General relativity effects in precision spin experimental tests of fundamental symmetries
• New approach to search for parity-even and parity-odd time-reversal violation beyond the Standard Model in a storage ring
• On the sensitivity of the D parameter to new physics
• Testing effective field theory with the most general neutron decay correlations