MeV-scale reheating temperature and cosmological production of light sterile neutrinos

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Standard

MeV-scale reheating temperature and cosmological production of light sterile neutrinos. / Hasegawa, Takuya; Hiroshima, Nagisa; Kohri, Kazunori; Hansen, Rasmus S. L.; Tram, Thomas; Hannestad, Steen.

I: Journal of Cosmology and Astroparticle Physics, Bind 2020, Nr. 8, 015, 08.2020.

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Harvard

Hasegawa, T, Hiroshima, N, Kohri, K, Hansen, RSL, Tram, T & Hannestad, S 2020, 'MeV-scale reheating temperature and cosmological production of light sterile neutrinos', Journal of Cosmology and Astroparticle Physics, bind 2020, nr. 8, 015. https://doi.org/10.1088/1475-7516/2020/08/015

APA

Hasegawa, T., Hiroshima, N., Kohri, K., Hansen, R. S. L., Tram, T., & Hannestad, S. (2020). MeV-scale reheating temperature and cosmological production of light sterile neutrinos. Journal of Cosmology and Astroparticle Physics, 2020(8), [015]. https://doi.org/10.1088/1475-7516/2020/08/015

Vancouver

Hasegawa T, Hiroshima N, Kohri K, Hansen RSL, Tram T, Hannestad S. MeV-scale reheating temperature and cosmological production of light sterile neutrinos. Journal of Cosmology and Astroparticle Physics. 2020 aug.;2020(8). 015. https://doi.org/10.1088/1475-7516/2020/08/015

Author

Hasegawa, Takuya ; Hiroshima, Nagisa ; Kohri, Kazunori ; Hansen, Rasmus S. L. ; Tram, Thomas ; Hannestad, Steen. / MeV-scale reheating temperature and cosmological production of light sterile neutrinos. I: Journal of Cosmology and Astroparticle Physics. 2020 ; Bind 2020, Nr. 8.

Bibtex

@article{7f8a9b7d40b049b2a377d81dfc0e1949,
title = "MeV-scale reheating temperature and cosmological production of light sterile neutrinos",
abstract = "We investigate how sterile neutrinos with a range of masses influence cosmology in MeV-scale reheating temperature scenarios. By computing the production of sterile neutrinos through the combination of mixing and scattering in the early Universe, we find that light sterile neutrinos, with masses and mixings as inferred from short-baseline neutrino oscillation experiments, are consistent with big-bang nucleosynthesis (BBN) and cosmic microwave background (CMB) radiation for the reheating temperature of O(1) MeV if the parent particle responsible for reheating decays into electromagnetic components (radiative decay). In contrast, if the parent particle mainly decays into hadrons (hadronic decay), the bound from BBN becomes more stringent. In this case, the existence of the light sterile neutrinos can be cosmologically excluded, depending on the mass and the hadronic branching ratio of the parent particle.",
keywords = "big bang nucleosynthesis, cosmology of theories beyond the SM, particle physics - cosmology connection, physics of the early universe, NUCLEOSYNTHESIS, CONSTRAINTS, ALGORITHM",
author = "Takuya Hasegawa and Nagisa Hiroshima and Kazunori Kohri and Hansen, {Rasmus S. L.} and Thomas Tram and Steen Hannestad",
year = "2020",
month = aug,
doi = "10.1088/1475-7516/2020/08/015",
language = "English",
volume = "2020",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "8",

}

RIS

TY - JOUR

T1 - MeV-scale reheating temperature and cosmological production of light sterile neutrinos

AU - Hasegawa, Takuya

AU - Hiroshima, Nagisa

AU - Kohri, Kazunori

AU - Hansen, Rasmus S. L.

AU - Tram, Thomas

AU - Hannestad, Steen

PY - 2020/8

Y1 - 2020/8

N2 - We investigate how sterile neutrinos with a range of masses influence cosmology in MeV-scale reheating temperature scenarios. By computing the production of sterile neutrinos through the combination of mixing and scattering in the early Universe, we find that light sterile neutrinos, with masses and mixings as inferred from short-baseline neutrino oscillation experiments, are consistent with big-bang nucleosynthesis (BBN) and cosmic microwave background (CMB) radiation for the reheating temperature of O(1) MeV if the parent particle responsible for reheating decays into electromagnetic components (radiative decay). In contrast, if the parent particle mainly decays into hadrons (hadronic decay), the bound from BBN becomes more stringent. In this case, the existence of the light sterile neutrinos can be cosmologically excluded, depending on the mass and the hadronic branching ratio of the parent particle.

AB - We investigate how sterile neutrinos with a range of masses influence cosmology in MeV-scale reheating temperature scenarios. By computing the production of sterile neutrinos through the combination of mixing and scattering in the early Universe, we find that light sterile neutrinos, with masses and mixings as inferred from short-baseline neutrino oscillation experiments, are consistent with big-bang nucleosynthesis (BBN) and cosmic microwave background (CMB) radiation for the reheating temperature of O(1) MeV if the parent particle responsible for reheating decays into electromagnetic components (radiative decay). In contrast, if the parent particle mainly decays into hadrons (hadronic decay), the bound from BBN becomes more stringent. In this case, the existence of the light sterile neutrinos can be cosmologically excluded, depending on the mass and the hadronic branching ratio of the parent particle.

KW - big bang nucleosynthesis

KW - cosmology of theories beyond the SM

KW - particle physics - cosmology connection

KW - physics of the early universe

KW - NUCLEOSYNTHESIS

KW - CONSTRAINTS

KW - ALGORITHM

U2 - 10.1088/1475-7516/2020/08/015

DO - 10.1088/1475-7516/2020/08/015

M3 - Journal article

VL - 2020

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 8

M1 - 015

ER -

ID: 247334632