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Title

The Role of Electroweak Corrections for the Dark Matter Relic Abundance
Authors
Ciafaloni, Paolo
Comelli, Denis
De Simone, Andrea
Morgante, Enrico
Riotto, Antonio Walter
Urbano, Alfredo
Published in Journal of Cosmology and Astroparticle Physics. 2013, vol. 2013, no. 10, p. 031-031
Abstract We analyze the validity of the theorems concerning the cancellation of the infrared and collinar divergences in the case of dark matter freeze-out in the early universe. In particular, we compute the electroweak logarithmic corrections of infrared origin to the annihilation cross section of a dark matter particle being the neutral component of a SU(2)L multiplet. The inclusion of processes with final state W can modify significantly the cross sections computed with only virtual W exchange. Our results show that the inclusion of infrared logs is necessary for a precise computation of the dark matter relic abundance.
Keywords Dark matter theory — Particle physics — Cosmology connection
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Article (Published version) (505 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://stacks.iop.org/1475-7516/2013/i=10/a=031?key=crossref.04a4b5f39b8586c4f31c0cac1e700ee9
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Faculté des sciences / Section de physique / Département de physique théorique
Citation
(ISO format) 		CIAFALONI, Paolo et al. The Role of Electroweak Corrections for the Dark Matter Relic Abundance. In: Journal of Cosmology and Astroparticle Physics, 2013, vol. 2013, n° 10, p. 031-031. https://archive-ouverte.unige.ch/unige:36488

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Deposited on : 2014-05-12

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