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

Basem Kamal El-Menoufi; Michael J. Ramsey-Musolf; Chien-Yeah Seng

doi:10.1016/j.physletb.2016.11.061

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arXiv · 1605.09060

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

Basem Kamal El-Menoufi·Michael J. Ramsey-Musolf·Chien-Yeah Seng

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Abstract

We show that experimental probes of the P-conserving, T-violating triple correlation in polarized neutron or nuclear $β$-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.

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Basem Kamal El-Menoufi, Michael J. Ramsey-Musolf, Chien-Yeah Seng. 2016-09-26. Right-Handed Neutrinos and T-Violating, P-Conserving Interactions. https://doi.org/10.1016/j.physletb.2016.11.061

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