Calculations of Neutralino-Stop Coannihilation in the CMSSM
By John Ellis, K. Olive, Y. Santoso. 2001
209 citations recorded by the source corpus.
Abstract We present detailed calculations of the χ t 1 coannihilation channels that have the largest impact on the relic χ density in the constrained minimal supersymmetric extension of the Standard Model (CMSSM), in which scalar masses m0, gaugino masses m1/2 and the trilinear soft supersymmetry-breaking parameters A0 are each assumed to be universal at some input grand unification scale. The most important t 1 t 1 ∗ and t 1 t 1 annihilation channels are also calculated, as well as t 1 l coannihilation channels. We illustrate the importance of these new coannihilation calculations when A0 is relatively large. While they do not increase the range of m1/2 and hence mχ allowed by cosmology, these coannihilation channels do open up new ‘tails’ of parameter space extending to larger values of m0.
Subfields: Artificial Intelligence, Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/c89416af31da29020180f882dca1b5f0173c066b
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In Artificial Intelligence
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In Nuclear and High Energy Physics
- M. Raidal
- G. Arcadi
- Abdelhak Djouadi
- Alessandro Strumia
- K. Kannike
- Atlas Collaboration
- Cms Collaboration
- Alexander Pukhov
Citations in the corpus
- Dark Matter through the Higgs portal (2019, background): “The most commonly considered coannihilation scenarios are with the lightest slepton (typically the τ) [253,538–541] or the lightest squark (typically the lightest stop squark) [541–544].”