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Title: Dark matter production during the thermalization era

Abstract

We revisit the non-thermal dark matter (DM) production during the thermalization and reheating era after inflation. The decay of inflaton produces high-energy particles that are thermalized to complete the reheating of the Universe. Before the thermalization is completed, DM can be produced from a collision between the high-energy particles and/or the ambient plasma. We calculate the DM abundance produced from these processes for the case where the cross section of the DM production is proportional to the $n$-th power of the center of mass energy. We find that the collision between the high-energy particles is almost always dominant for $$n \gtrsim 4$$ while it is subdominant for $$n \lesssim 2$$. The production from the ambient plasma is dominant when $$n \lesssim 3$$ and the reheating temperature is of the order of or larger than the DM mass. The production from a collision between the high-energy particle and the ambient plasma is important for $$n \lesssim 2$$ and the reheating temperature is much lower than the DM mass.

Authors:
 [1];  [2];  [3]
  1. Inst. for Advanced Study, Princeton, NJ (United States). School of Natural Sciences
  2. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  3. Tufts Univ., Medford, MA (United States). Dept. of Physics and Astronomy and Inst. of Cosmology
Publication Date:
Research Org.:
Inst. for Advanced Study, Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1596652
Grant/Contract Number:  
[SC0009988]
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
[Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 7]; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Cosmology of Theories beyond the SM; Quark-Gluon Plasma; Thermal Field Theory

Citation Formats

Harigaya, Keisuke, Mukaida, Kyohei, and Yamada, Masaki. Dark matter production during the thermalization era. United States: N. p., 2019. Web. doi:10.1007/JHEP07(2019)059.
Harigaya, Keisuke, Mukaida, Kyohei, & Yamada, Masaki. Dark matter production during the thermalization era. United States. doi:10.1007/JHEP07(2019)059.
Harigaya, Keisuke, Mukaida, Kyohei, and Yamada, Masaki. Thu . "Dark matter production during the thermalization era". United States. doi:10.1007/JHEP07(2019)059. https://www.osti.gov/servlets/purl/1596652.
@article{osti_1596652,
title = {Dark matter production during the thermalization era},
author = {Harigaya, Keisuke and Mukaida, Kyohei and Yamada, Masaki},
abstractNote = {We revisit the non-thermal dark matter (DM) production during the thermalization and reheating era after inflation. The decay of inflaton produces high-energy particles that are thermalized to complete the reheating of the Universe. Before the thermalization is completed, DM can be produced from a collision between the high-energy particles and/or the ambient plasma. We calculate the DM abundance produced from these processes for the case where the cross section of the DM production is proportional to the $n$-th power of the center of mass energy. We find that the collision between the high-energy particles is almost always dominant for $n \gtrsim 4$ while it is subdominant for $n \lesssim 2$. The production from the ambient plasma is dominant when $n \lesssim 3$ and the reheating temperature is of the order of or larger than the DM mass. The production from a collision between the high-energy particle and the ambient plasma is important for $n \lesssim 2$ and the reheating temperature is much lower than the DM mass.},
doi = {10.1007/JHEP07(2019)059},
journal = {Journal of High Energy Physics (Online)},
number = [7],
volume = [2019],
place = {United States},
year = {2019},
month = {7}
}

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Works referenced in this record:

Reheating after Inflation
journal, December 1994


Instant preheating
journal, May 1999


Bremsstrahlung and Pair Production in Condensed Media at High Energies
journal, September 1956


Case for an EeV Gravitino
journal, July 2017


    Works referencing / citing this record:

    Dark matter production during the thermalization era
    text, January 2019

    • Harigaya, Keisuke; Mukaida, Kyohei; Yamada, Masaki
    • Deutsches Elektronen-Synchrotron, DESY, Hamburg
    • DOI: 10.3204/pubdb-2019-02908