Coherent active-sterile neutrino flavor transformation in the early universe

We solve the problem of coherent Mikheyev-Smirnov-Wolfenstein resonant active-to-sterile neutrino flavor conversion driven by an initial lepton number in the early Universe. We find incomplete destruction of the lepton number in this process and a sterile neutrino energy distribution with a distinct...

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Published in:Physical review letters 2006-10, Vol.97 (14), p.141301-141301, Article 141301
Main Authors: Kishimoto, Chad T, Fuller, George M, Smith, Christel J
Format: Article
Language:English
Subjects:
CUSPED GEOMETRIES
ENERGY SPECTRA
EV RANGE 01-10
FLAVOR MODEL
LEPTON NUMBER
NEUTRINOS
NUCLEOSYNTHESIS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
UNIVERSE
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cited_by cdi_FETCH-LOGICAL-c401t-4b33df04751718f43b58893e73f26c31f82a3ebfb1cb26223196cc9154fcd53a3
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container_title Physical review letters
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creator Kishimoto, Chad T
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description We solve the problem of coherent Mikheyev-Smirnov-Wolfenstein resonant active-to-sterile neutrino flavor conversion driven by an initial lepton number in the early Universe. We find incomplete destruction of the lepton number in this process and a sterile neutrino energy distribution with a distinctive cusp and high energy tail. These features imply alteration of the nonzero lepton number primordial nucleosynthesis paradigm when there exist sterile neutrinos with rest masses m(s) approximately 1 eV. This could result in better light element probes of (constraints on) these particles.
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects CUSPED GEOMETRIES
ENERGY SPECTRA
EV RANGE 01-10
FLAVOR MODEL
LEPTON NUMBER
NEUTRINOS
NUCLEOSYNTHESIS
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
UNIVERSE
title Coherent active-sterile neutrino flavor transformation in the early universe
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