| Autor: |
Hisano, J., Matsumoto, S., Nagai, M., Saito, O., Senami, M. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 11/20/2007, Vol. 957 Issue 1, p401-404, 4p, 2 Graphs |
| Abstrakt: |
We point out that thermal relic abundance of dark matter is strongly altered by a non-perturbative effect called the Sommerfeld enhancement, when constituent particles of the dark matter are SU(2)L non-singlet and much heavier than the weak gauge bosons. Typical candidates are the heavy wino and higgsino. We investigate the non-perturbative effect on the relic abundance of dark matter for the wino as an example. We show that its thermal abundance is reduced by 50% compared to the perturbative result. The wino mass consistent with the observed dark matter abundance turns out to be 2.7 TeV
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| Databáze: |
Complementary Index |
| Externí odkaz: |
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