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Title: Applicability of approximations used in calculations of the spectrum of dark matter particles produced in particle decays

Abstract

For the warm dark matter (WDM) candidates the momentum distribution of particles becomes important, since it can be probed with observations of Lyman-α forest structures and confronted with coarse grained phase space density in galaxy clusters. We recall the calculation of the spectrum in the case of dark matter nonthermal production in decays of heavy particles emphasizing the inherent applicability conditions, which are rather restrictive and sometimes ignored in literature. Finally, the cold part of the spectrum requires special care when WDM is considered.

Authors:
 [1];  [2]
  1. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Univ. of Connecticut, Storrs, CT (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Institute for Nuclear Research of the Russian Academy of Sciences, Moscow (Russia); Moscow Institute of Physics and Technology, Dolgoprudny (Russia)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). RIKEN Research Center
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1335481
Report Number(s):
BNL-112157-2016-JA
Journal ID: ISSN 2470-0010; PRVDAQ; R&D Project: PO-3
Grant/Contract Number:  
SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 6; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Riken BNL Research Center

Citation Formats

Bezrukov, Fedor, and Gorbunov, Dmitry. Applicability of approximations used in calculations of the spectrum of dark matter particles produced in particle decays. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.93.063502.
Bezrukov, Fedor, & Gorbunov, Dmitry. Applicability of approximations used in calculations of the spectrum of dark matter particles produced in particle decays. United States. doi:10.1103/PhysRevD.93.063502.
Bezrukov, Fedor, and Gorbunov, Dmitry. Thu . "Applicability of approximations used in calculations of the spectrum of dark matter particles produced in particle decays". United States. doi:10.1103/PhysRevD.93.063502. https://www.osti.gov/servlets/purl/1335481.
@article{osti_1335481,
title = {Applicability of approximations used in calculations of the spectrum of dark matter particles produced in particle decays},
author = {Bezrukov, Fedor and Gorbunov, Dmitry},
abstractNote = {For the warm dark matter (WDM) candidates the momentum distribution of particles becomes important, since it can be probed with observations of Lyman-α forest structures and confronted with coarse grained phase space density in galaxy clusters. We recall the calculation of the spectrum in the case of dark matter nonthermal production in decays of heavy particles emphasizing the inherent applicability conditions, which are rather restrictive and sometimes ignored in literature. Finally, the cold part of the spectrum requires special care when WDM is considered.},
doi = {10.1103/PhysRevD.93.063502},
journal = {Physical Review D},
number = 6,
volume = 93,
place = {United States},
year = {2016},
month = {3}
}

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Cited by: 4 works
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