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Title: New observational limits on dark radiation in braneworld cosmology

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Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 95; Journal Issue: 8; Related Information: CHORUS Timestamp: 2017-04-19 22:09:05; Journal ID: ISSN 2470-0010
American Physical Society
Country of Publication:
United States

Citation Formats

Sasankan, Nishanth, Gangopadhyay, Mayukh Raj, Mathews, Grant J., and Kusakabe, Motohiko. New observational limits on dark radiation in braneworld cosmology. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.95.083516.
Sasankan, Nishanth, Gangopadhyay, Mayukh Raj, Mathews, Grant J., & Kusakabe, Motohiko. New observational limits on dark radiation in braneworld cosmology. United States. doi:10.1103/PhysRevD.95.083516.
Sasankan, Nishanth, Gangopadhyay, Mayukh Raj, Mathews, Grant J., and Kusakabe, Motohiko. 2017. "New observational limits on dark radiation in braneworld cosmology". United States. doi:10.1103/PhysRevD.95.083516.
title = {New observational limits on dark radiation in braneworld cosmology},
author = {Sasankan, Nishanth and Gangopadhyay, Mayukh Raj and Mathews, Grant J. and Kusakabe, Motohiko},
abstractNote = {},
doi = {10.1103/PhysRevD.95.083516},
journal = {Physical Review D},
number = 8,
volume = 95,
place = {United States},
year = 2017,
month = 4

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on April 19, 2018
Publisher's Accepted Manuscript

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  • We investigate the effect of a braneworld expansion era on the relic density of asymmetric dark matter. We find that the enhanced expansion rate in the early universe predicted by the Randall-Sundrum II (RSII) model leads to earlier particle freeze-out and an enhanced relic density. This effect has been observed previously by Okada and Seto (2004) for symmetric dark matter models and here we extend their results to the case of asymmetric dark matter. We also discuss the enhanced asymmetric annihilation rate in the braneworld scenario and its implications for indirect detection experiments.
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