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The Role of Electroweak Corrections for the Dark Matter Relic Abundance

Ciafaloni, Paolo
Comelli, Denis
De Simone, Andrea
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 theoryParticle physicsCosmology connection
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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. doi: 10.1088/1475-7516/2013/10/031 https://archive-ouverte.unige.ch/unige:36488

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Deposited on : 2014-05-12

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