Abstract
Abstract
Right-handed neutrinos (νR) are often considered as a portal to new hidden physics. It is tempting to consider a gauge singlet scalar (ϕ) that exclusively couples to νR via a νRνRϕ term. Such a νR-philic scalar does not interact with charged fermions at tree level but loop-induced effective interactions are inevitable, which are systematically investigated in this work. The magnitude of the loop-induced couplings coincidentally meets the current sensitivity of fifth-force searches. In particular, the loop-induced coupling to muons could be tested in the recent LIGO observations of neutron star mergers as there might be a sizable Yukawa force in the binary system mediated by the νR-philic scalar.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference82 articles.
1. T. Asaka and M. Shaposhnikov, The νMSM, dark matter and baryon asymmetry of the universe, Phys. Lett. B 620 (2005) 17 [hep-ph/0505013] [INSPIRE].
2. T. Asaka, S. Blanchet and M. Shaposhnikov, The nuMSM, dark matter and neutrino masses, Phys. Lett. B 631 (2005) 151 [hep-ph/0503065] [INSPIRE].
3. T. Alanne, T. Hugle, M. Platscher and K. Schmitz, Low-scale leptogenesis assisted by a real scalar singlet, JCAP 03 (2019) 037 [arXiv:1812.04421] [INSPIRE].
4. P. Minkowski, μ → eγ at a Rate of One Out of 109 Muon Decays?, Phys. Lett. B 67 (1977) 421 [INSPIRE].
5. T. Yanagida, Horizontal gauge symmetry and masses of neutrinos, in Proceedings of the Workshop on the Unified Theory and the Baryon Number in the Universe, Tsukuba Japan (1979), KEK Report 79-18-95 (1979).
Cited by
10 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献