Thermal relic abundances of particles with velocity-dependent interactions

We reexamine the evolution of thermal relic particle abundances for the case where the interaction rate depends on the particle velocities. For the case of Sommerfeld enhancement, we show that the standard analytic approximation, modified in a straightforward way, provides an estimate of the relic p...

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Published in:Physics letters. B 2010-04, Vol.687 (4-5), p.275-279
Main Authors: Dent, James B., Dutta, Sourish, Scherrer, Robert J.
Format: Article
Language:English
Subjects:
Abundance
Approximation
Cosmology
Cut off
Dark matter
Decoupling
Early universe
Elementary particles
Error analysis
Evolution
Exact sciences and technology
Mathematical analysis
Nuclear physics
Physics
Sommerfeld enchancement
The physics of elementary particles and fields
Thermal relic abundances
Velocity-dependent interactions
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cited_by cdi_FETCH-LOGICAL-c449t-7af6574c7507fdeec1128c85ba0332050db5e00136bc5f39d2149fcfb55b1cee3
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container_issue 4-5
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container_title Physics letters. B
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creator Dent, James B.
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Scherrer, Robert J.
description We reexamine the evolution of thermal relic particle abundances for the case where the interaction rate depends on the particle velocities. For the case of Sommerfeld enhancement, we show that the standard analytic approximation, modified in a straightforward way, provides an estimate of the relic particle abundance that is accurate to within 10% (in comparison to
doi_str_mv 10.1016/j.physletb.2010.03.018
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subjects Abundance
Approximation
Cosmology
Cut off
Dark matter
Decoupling
Early universe
Elementary particles
Error analysis
Evolution
Exact sciences and technology
Mathematical analysis
Nuclear physics
Physics
Sommerfeld enchancement
The physics of elementary particles and fields
Thermal relic abundances
Velocity-dependent interactions
title Thermal relic abundances of particles with velocity-dependent interactions
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