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Title: Constraints on Scattering of keV–TeV Dark Matter with Protons in the Early Universe

Abstract

Here in this work, we present the first cosmological constraint on dark matter scattering with protons in the early Universe for the entire range of dark matter masses between 1 keV and 1 TeV. This constraint is derived from the Planck measurements of the cosmic microwave background (CMB) temperature and polarization anisotropy, and the CMB lensing anisotropy. It improves upon previous CMB constraints by many orders of magnitude, where limits are available, and closes the gap in coverage for low-mass dark matter candidates. We focus on two canonical interaction scenarios: spin-independent and spin-dependent scattering with no velocity dependence. Our results exclude (with 95% confidence) spin-independent interactions with cross sections greater than 5.3 × 10 - 27 cm 2 for 1 keV, 3.0 × 10 - 26 cm 2 for 1 MeV, 1.7 × 10 - 25 cm 2 for 1 GeV, and 1.6 × 10 - 23 cm 2 for 1 TeV dark matter mass. Finally, we discuss the implications of this study for dark matter physics and future observations.

Authors:
 [1];  [2]
  1. Inst. for Advanced Study, Princeton, NJ (United States)
  2. Johns Hopkins Univ., Baltimore, MD (United States); Univ. of Hawaii, Honolulu, HI (United States)
Publication Date:
Research Org.:
Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1597941
Grant/Contract Number:  
[SC0010504]
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
[ Journal Volume: 121; Journal Issue: 8]; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Gluscevic, Vera, and Boddy, Kimberly K. Constraints on Scattering of keV–TeV Dark Matter with Protons in the Early Universe. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.121.081301.
Gluscevic, Vera, & Boddy, Kimberly K. Constraints on Scattering of keV–TeV Dark Matter with Protons in the Early Universe. United States. doi:10.1103/PhysRevLett.121.081301.
Gluscevic, Vera, and Boddy, Kimberly K. Mon . "Constraints on Scattering of keV–TeV Dark Matter with Protons in the Early Universe". United States. doi:10.1103/PhysRevLett.121.081301. https://www.osti.gov/servlets/purl/1597941.
@article{osti_1597941,
title = {Constraints on Scattering of keV–TeV Dark Matter with Protons in the Early Universe},
author = {Gluscevic, Vera and Boddy, Kimberly K.},
abstractNote = {Here in this work, we present the first cosmological constraint on dark matter scattering with protons in the early Universe for the entire range of dark matter masses between 1 keV and 1 TeV. This constraint is derived from the Planck measurements of the cosmic microwave background (CMB) temperature and polarization anisotropy, and the CMB lensing anisotropy. It improves upon previous CMB constraints by many orders of magnitude, where limits are available, and closes the gap in coverage for low-mass dark matter candidates. We focus on two canonical interaction scenarios: spin-independent and spin-dependent scattering with no velocity dependence. Our results exclude (with 95% confidence) spin-independent interactions with cross sections greater than 5.3×10-27 cm2 for 1 keV, 3.0×10-26 cm2 for 1 MeV, 1.7×10-25 cm2 for 1 GeV, and 1.6×10-23 cm2 for 1 TeV dark matter mass. Finally, we discuss the implications of this study for dark matter physics and future observations.},
doi = {10.1103/PhysRevLett.121.081301},
journal = {Physical Review Letters},
number = [8],
volume = [121],
place = {United States},
year = {2018},
month = {8}
}

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