Improved big bang nucleosynthesis constraints on heavy neutral leptons

Research output: Contribution to journal › Journal article › Research › peer-review

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Improved big bang nucleosynthesis constraints on heavy neutral leptons. / Boyarsky, A.; Ovchynnikov, M.; Ruchayskiy, O.; Syvolap.

In: Physical Review D, Vol. 104, No. 2, 023517, 16.07.2021.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Boyarsky, A, Ovchynnikov, M, Ruchayskiy, O & Syvolap 2021, 'Improved big bang nucleosynthesis constraints on heavy neutral leptons', Physical Review D, vol. 104, no. 2, 023517. https://doi.org/10.1103/PhysRevD.104.023517

APA

Boyarsky, A., Ovchynnikov, M., Ruchayskiy, O., & Syvolap (2021). Improved big bang nucleosynthesis constraints on heavy neutral leptons. Physical Review D, 104(2), [023517]. https://doi.org/10.1103/PhysRevD.104.023517

Vancouver

Boyarsky A, Ovchynnikov M, Ruchayskiy O, Syvolap. Improved big bang nucleosynthesis constraints on heavy neutral leptons. Physical Review D. 2021 Jul 16;104(2). 023517. https://doi.org/10.1103/PhysRevD.104.023517

Author

Boyarsky, A. ; Ovchynnikov, M. ; Ruchayskiy, O. ; Syvolap. / Improved big bang nucleosynthesis constraints on heavy neutral leptons. In: Physical Review D. 2021 ; Vol. 104, No. 2.

Bibtex

@article{ea27faff400843cb92275e6a6d28e565,
title = "Improved big bang nucleosynthesis constraints on heavy neutral leptons",
abstract = "We constrain the lifetime of thermally produced heavy neutral leptons (HNLs) from big bang nucleosynthesis. We show that even a small fraction of mesons present in the primeval plasma leads to the overproduction of primordial helium-4. This constrains the lifetime of HNLs to be tau(N) < 0.02 s for masses above the mass of the pion (as compared to 0.1 s reported previously). In combination with accelerator searches, this allows us to put a new lower bound on the HNL masses and define the {"}bottom line{"} for HNL searches at the future Intensity Frontier experiments.",
keywords = "PRIMORDIAL HELIUM ABUNDANCE, STERILE NEUTRINOS, DARK-MATTER, BOUNDS, VMSM",
author = "A. Boyarsky and M. Ovchynnikov and O. Ruchayskiy and Syvolap",
year = "2021",
month = jul,
day = "16",
doi = "10.1103/PhysRevD.104.023517",
language = "English",
volume = "104",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "2",

}

RIS

TY - JOUR

T1 - Improved big bang nucleosynthesis constraints on heavy neutral leptons

AU - Boyarsky, A.

AU - Ovchynnikov, M.

AU - Ruchayskiy, O.

AU - Syvolap, null

PY - 2021/7/16

Y1 - 2021/7/16

N2 - We constrain the lifetime of thermally produced heavy neutral leptons (HNLs) from big bang nucleosynthesis. We show that even a small fraction of mesons present in the primeval plasma leads to the overproduction of primordial helium-4. This constrains the lifetime of HNLs to be tau(N) < 0.02 s for masses above the mass of the pion (as compared to 0.1 s reported previously). In combination with accelerator searches, this allows us to put a new lower bound on the HNL masses and define the "bottom line" for HNL searches at the future Intensity Frontier experiments.

AB - We constrain the lifetime of thermally produced heavy neutral leptons (HNLs) from big bang nucleosynthesis. We show that even a small fraction of mesons present in the primeval plasma leads to the overproduction of primordial helium-4. This constrains the lifetime of HNLs to be tau(N) < 0.02 s for masses above the mass of the pion (as compared to 0.1 s reported previously). In combination with accelerator searches, this allows us to put a new lower bound on the HNL masses and define the "bottom line" for HNL searches at the future Intensity Frontier experiments.

KW - PRIMORDIAL HELIUM ABUNDANCE

KW - STERILE NEUTRINOS

KW - DARK-MATTER

KW - BOUNDS

KW - VMSM

U2 - 10.1103/PhysRevD.104.023517

DO - 10.1103/PhysRevD.104.023517

M3 - Journal article

VL - 104

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 2

M1 - 023517

ER -

ID: 276162860