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Title: Probing neutrino mass hierarchy by comparing the charged-current and neutral-current interaction rates of supernova neutrinos

Abstract

The neutrino mass hierarchy is one of the neutrino fundamental properties yet to be determined. We introduce a method to determine neutrino mass hierarchy by comparing the interaction rate of neutral current (NC) interactions, ν(ν-bar)+p→ν(ν-bar)+p, and inverse beta decays (IBD), ν-bar{sub e}+p→n+e{sup +}, of supernova neutrinos in scintillation detectors. Neutrino flavor conversions inside the supernova are sensitive to neutrino mass hierarchy. Due to Mikheyev-Smirnov-Wolfenstein effects, the full swapping of ν-bar{sub e} flux with the ν-bar{sub x} (x=μ, τ) one occurs in the inverted hierarchy, while such a swapping does not occur in the normal hierarchy. As a result, more high energy IBD events occur in the detector for the inverted hierarchy than the high energy IBD events in the normal hierarchy. By comparing IBD interaction rate with the mass hierarchy independent NC interaction rate, one can determine the neutrino mass hierarchy.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [5];  [4]
  1. Center for General Education, Chang Gung University,Kwei-Shan, Taoyuan, 333, Taiwan (China)
  2. (LeCosPA), National Taiwan University, Taipei, 106, Taiwan (China)
  3. Institute of Physics, National Chiao Tung University,Hsinchu, 300, Taiwan (China)
  4. Department of Electrophysics, National Chiao Tung University,Hsinchu, 300, Taiwan (China)
  5. Leung Center for Cosmology and Particle Astrophysics (LeCosPA), National Taiwan University, Taipei, 106, Taiwan (China)
  6. (China)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572121
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 07; Other Information: PUBLISHER-ID: JCAP07(2016)039; OAI: oai:repo.scoap3.org:16558; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHARGED CURRENTS; COSMIC NEUTRINOS; ELECTRON NEUTRINOS; FLAVOR MODEL; MUON NEUTRINOS; NEUTRAL CURRENTS; NEUTRAL-CURRENT INTERACTIONS; NEUTRINO-PROTON INTERACTIONS; REST MASS; SCINTILLATION COUNTERS; SUPERNOVAE; TAU NEUTRINOS

Citation Formats

Lai, Kwang-Chang, Leung Center for Cosmology and Particle Astrophysics, Lee, Fei-Fan, Lee, Feng-Shiuh, Lin, Guey-Lin, Institute of Physics, National Chiao Tung University,Hsinchu, 300, Taiwan, Liu, Tsung-Che, and Yang, Yi. Probing neutrino mass hierarchy by comparing the charged-current and neutral-current interaction rates of supernova neutrinos. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/07/039.
Lai, Kwang-Chang, Leung Center for Cosmology and Particle Astrophysics, Lee, Fei-Fan, Lee, Feng-Shiuh, Lin, Guey-Lin, Institute of Physics, National Chiao Tung University,Hsinchu, 300, Taiwan, Liu, Tsung-Che, & Yang, Yi. Probing neutrino mass hierarchy by comparing the charged-current and neutral-current interaction rates of supernova neutrinos. United States. doi:10.1088/1475-7516/2016/07/039.
Lai, Kwang-Chang, Leung Center for Cosmology and Particle Astrophysics, Lee, Fei-Fan, Lee, Feng-Shiuh, Lin, Guey-Lin, Institute of Physics, National Chiao Tung University,Hsinchu, 300, Taiwan, Liu, Tsung-Che, and Yang, Yi. Fri . "Probing neutrino mass hierarchy by comparing the charged-current and neutral-current interaction rates of supernova neutrinos". United States. doi:10.1088/1475-7516/2016/07/039.
@article{osti_22572121,
title = {Probing neutrino mass hierarchy by comparing the charged-current and neutral-current interaction rates of supernova neutrinos},
author = {Lai, Kwang-Chang and Leung Center for Cosmology and Particle Astrophysics and Lee, Fei-Fan and Lee, Feng-Shiuh and Lin, Guey-Lin and Institute of Physics, National Chiao Tung University,Hsinchu, 300, Taiwan and Liu, Tsung-Che and Yang, Yi},
abstractNote = {The neutrino mass hierarchy is one of the neutrino fundamental properties yet to be determined. We introduce a method to determine neutrino mass hierarchy by comparing the interaction rate of neutral current (NC) interactions, ν(ν-bar)+p→ν(ν-bar)+p, and inverse beta decays (IBD), ν-bar{sub e}+p→n+e{sup +}, of supernova neutrinos in scintillation detectors. Neutrino flavor conversions inside the supernova are sensitive to neutrino mass hierarchy. Due to Mikheyev-Smirnov-Wolfenstein effects, the full swapping of ν-bar{sub e} flux with the ν-bar{sub x} (x=μ, τ) one occurs in the inverted hierarchy, while such a swapping does not occur in the normal hierarchy. As a result, more high energy IBD events occur in the detector for the inverted hierarchy than the high energy IBD events in the normal hierarchy. By comparing IBD interaction rate with the mass hierarchy independent NC interaction rate, one can determine the neutrino mass hierarchy.},
doi = {10.1088/1475-7516/2016/07/039},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 07,
volume = 2016,
place = {United States},
year = {Fri Jul 22 00:00:00 EDT 2016},
month = {Fri Jul 22 00:00:00 EDT 2016}
}