Accessible lepton-number-violating models and negligible neutrino masses
Abstract
Lepton-number violation (LNV), in general, implies nonzero Majorana masses for the Standard Model neutrinos. Since neutrino masses are very small, for generic candidate models of the physics responsible for LNV, the rates for almost all experimentally accessible LNV observables—except for neutrinoless double-beta decay—are expected to be exceedingly small. Guided by effective-operator considerations of LNV phenomena, we identify a complete family of models where lepton number is violated but the generated Majorana neutrino masses are tiny, even if the new-physics scale is below 1 TeV. We explore the phenomenology of these models, including charged-lepton flavor-violating phenomena and baryon-number-violating phenomena, identifying scenarios where the allowed rates for μ⁻ → e⁺ -conversion in nuclei are potentially accessible to next-generation experiments.
- Publication Date:
- Research Org.:
- Northwestern Univ., Evanston, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); Independent Research Fund Denmark; National Science Foundation (NSF); Heising-Simons Foundation; Danish National Research Foundation (DNRF)
- OSTI Identifier:
- 1572097
- Alternate Identifier(s):
- OSTI ID: 1802066
- Grant/Contract Number:
- de-sc0010143; SC0010143; DFF 6108-00623; PHY-1630782; 2017-228; DNRF90
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 7; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Astronomy & Astrophysics; Physics
Citation Formats
de Gouvêa, André, Huang, Wei-Chih, König, Johannes, and Sen, Manibrata. Accessible lepton-number-violating models and negligible neutrino masses. United States: N. p., 2019.
Web. doi:10.1103/PhysRevD.100.075033.
de Gouvêa, André, Huang, Wei-Chih, König, Johannes, & Sen, Manibrata. Accessible lepton-number-violating models and negligible neutrino masses. United States. https://doi.org/10.1103/PhysRevD.100.075033
de Gouvêa, André, Huang, Wei-Chih, König, Johannes, and Sen, Manibrata. Fri .
"Accessible lepton-number-violating models and negligible neutrino masses". United States. https://doi.org/10.1103/PhysRevD.100.075033.
@article{osti_1572097,
title = {Accessible lepton-number-violating models and negligible neutrino masses},
author = {de Gouvêa, André and Huang, Wei-Chih and König, Johannes and Sen, Manibrata},
abstractNote = {Lepton-number violation (LNV), in general, implies nonzero Majorana masses for the Standard Model neutrinos. Since neutrino masses are very small, for generic candidate models of the physics responsible for LNV, the rates for almost all experimentally accessible LNV observables—except for neutrinoless double-beta decay—are expected to be exceedingly small. Guided by effective-operator considerations of LNV phenomena, we identify a complete family of models where lepton number is violated but the generated Majorana neutrino masses are tiny, even if the new-physics scale is below 1 TeV. We explore the phenomenology of these models, including charged-lepton flavor-violating phenomena and baryon-number-violating phenomena, identifying scenarios where the allowed rates for μ⁻ → e⁺ -conversion in nuclei are potentially accessible to next-generation experiments.},
doi = {10.1103/PhysRevD.100.075033},
journal = {Physical Review D},
number = 7,
volume = 100,
place = {United States},
year = {2019},
month = {10}
}
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https://doi.org/10.1103/PhysRevD.100.075033
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