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Title: Lepton-number-charged scalars and neutrino beamstrahlung

Abstract

Experimentally, baryon number minus lepton number, $B-L$, appears to be a good global symmetry of nature. We explore the consequences of the existence of gauge-singlet scalar fields charged under $B-L$ $-$dubbed lepton-number-charged scalars, LeNCS $-$and postulate that these couple to the standard model degrees of freedom in such a way that $B-L$ is conserved even at the non-renormalizable level. In this framework, neutrinos are Dirac fermions. Including only the lowest mass-dimension effective operators, some of the LeNCS couple predominantly to neutrinos and may be produced in terrestrial neutrino experiments. We examine several existing constraints from particle physics, astrophysics, and cosmology to the existence of a LeNCS carrying $B-L$ charge equal to two, and discuss the emission of LeNCS's via "neutrino beamstrahlung," which occurs every once in a while when neutrinos scatter off of ordinary matter. In conclusion, we identify regions of the parameter space where existing and future neutrino experiments, including the Deep Underground Neutrino Experiment, are at the frontier of searches for such new phenomena.

Authors:
; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1434229
Alternate Identifier(s):
OSTI ID: 1434941
Report Number(s):
NUHEP-TH-18-03; FERMILAB-PUB-18-020-T; arXiv:1802.00009
Journal ID: ISSN 2470-0010; PRVDAQ; 075030
Grant/Contract Number:  
SC0018327; SC0010143; AC02-07CH11359
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 97 Journal Issue: 7; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Berryman, Jeffrey M., de Gouvêa, André, Kelly, Kevin J., and Zhang, Yue. Lepton-number-charged scalars and neutrino beamstrahlung. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.97.075030.
Berryman, Jeffrey M., de Gouvêa, André, Kelly, Kevin J., & Zhang, Yue. Lepton-number-charged scalars and neutrino beamstrahlung. United States. doi:10.1103/PhysRevD.97.075030.
Berryman, Jeffrey M., de Gouvêa, André, Kelly, Kevin J., and Zhang, Yue. Mon . "Lepton-number-charged scalars and neutrino beamstrahlung". United States. doi:10.1103/PhysRevD.97.075030.
@article{osti_1434229,
title = {Lepton-number-charged scalars and neutrino beamstrahlung},
author = {Berryman, Jeffrey M. and de Gouvêa, André and Kelly, Kevin J. and Zhang, Yue},
abstractNote = {Experimentally, baryon number minus lepton number, $B-L$, appears to be a good global symmetry of nature. We explore the consequences of the existence of gauge-singlet scalar fields charged under $B-L$ $-$dubbed lepton-number-charged scalars, LeNCS $-$and postulate that these couple to the standard model degrees of freedom in such a way that $B-L$ is conserved even at the non-renormalizable level. In this framework, neutrinos are Dirac fermions. Including only the lowest mass-dimension effective operators, some of the LeNCS couple predominantly to neutrinos and may be produced in terrestrial neutrino experiments. We examine several existing constraints from particle physics, astrophysics, and cosmology to the existence of a LeNCS carrying $B-L$ charge equal to two, and discuss the emission of LeNCS's via "neutrino beamstrahlung," which occurs every once in a while when neutrinos scatter off of ordinary matter. In conclusion, we identify regions of the parameter space where existing and future neutrino experiments, including the Deep Underground Neutrino Experiment, are at the frontier of searches for such new phenomena.},
doi = {10.1103/PhysRevD.97.075030},
journal = {Physical Review D},
number = 7,
volume = 97,
place = {United States},
year = {2018},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.97.075030

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Cited by: 3 works
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