Light cold dark matter from non-thermal decay

Ki Young Choi; Jinn Ouk Gong; Junghoon Joh; Wan Il Park; Osamu Seto

doi:10.1016/j.physletb.2023.138126

Light cold dark matter from non-thermal decay

Ki Young Choi
, Jinn Ouk Gong
, Junghoon Joh^*
, Wan Il Park
, Osamu Seto

^*Corresponding author for this work

Physics Education

Sungkyunkwan University
Ewha Womans University
Asia Pacific Center for Theoretical Physics
Hokkaido University

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

8 Scopus citations

Abstract

We investigate the mass range and the corresponding free-streaming length scale of dark matter produced non-thermally from decay of heavy objects which can be either dominant or sub-dominant at the moment of decay. We show that the resulting dark matter could be very light well below keV scale with a free-streaming length satisfying the Lyman-α constraints. We demonstrate two explicit examples for such light cold dark matter.

Original language	English
Article number	138126
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	845
DOIs	https://doi.org/10.1016/j.physletb.2023.138126
State	Published - 2023.10.10

Keywords

Axion
Dark matter
Non-thermal production
Q-ball

Quacquarelli Symonds(QS) Subject Topics

Physics & Astronomy

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10.1016/j.physletb.2023.138126

Cite this

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title = "Light cold dark matter from non-thermal decay",

abstract = "We investigate the mass range and the corresponding free-streaming length scale of dark matter produced non-thermally from decay of heavy objects which can be either dominant or sub-dominant at the moment of decay. We show that the resulting dark matter could be very light well below keV scale with a free-streaming length satisfying the Lyman-α constraints. We demonstrate two explicit examples for such light cold dark matter.",

keywords = "Axion, Dark matter, Non-thermal production, Q-ball",

author = "Choi, \{Ki Young\} and Gong, \{Jinn Ouk\} and Junghoon Joh and Park, \{Wan Il\} and Osamu Seto",

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T1 - Light cold dark matter from non-thermal decay

AU - Choi, Ki Young

AU - Gong, Jinn Ouk

AU - Joh, Junghoon

AU - Park, Wan Il

AU - Seto, Osamu

PY - 2023/10/10

Y1 - 2023/10/10

N2 - We investigate the mass range and the corresponding free-streaming length scale of dark matter produced non-thermally from decay of heavy objects which can be either dominant or sub-dominant at the moment of decay. We show that the resulting dark matter could be very light well below keV scale with a free-streaming length satisfying the Lyman-α constraints. We demonstrate two explicit examples for such light cold dark matter.

AB - We investigate the mass range and the corresponding free-streaming length scale of dark matter produced non-thermally from decay of heavy objects which can be either dominant or sub-dominant at the moment of decay. We show that the resulting dark matter could be very light well below keV scale with a free-streaming length satisfying the Lyman-α constraints. We demonstrate two explicit examples for such light cold dark matter.

KW - Axion

KW - Dark matter

KW - Non-thermal production

KW - Q-ball

UR - https://www.scopus.com/pages/publications/85169595157

U2 - 10.1016/j.physletb.2023.138126

DO - 10.1016/j.physletb.2023.138126

M3 - Journal article

AN - SCOPUS:85169595157

SN - 0370-2693

VL - 845

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 138126

ER -

Light cold dark matter from non-thermal decay

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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