Electroweak lights from Dark Matter annihilations

The energy spectra of Standard Model particles originated from Dark Matter annihilations can be significantly altered by the inclusion of electroweak gauge boson radiation from the final state. A situation where this effect is particularly important is when a Majorana Dark Matter particle annihilates into two light fermions. This process is in p-wave and hence suppressed by the small value of the relative velocity of the annihilating particles. The inclusion of electroweak radiation eludes this suppression and opens up a potentially sizeable s-wave contribution to the annihilation cross section. I will discuss the impact of this effect on the fluxes of stable particles resulting from the Dark Matter annihilations, which are relevant for Dark Matter indirect searches.


Editor(s):
Oberauer, L
Raffelt, G
Wagner, R
Published in:
12Th International Conference On Topics In Astroparticle And Underground Physics (Taup 2011), Pts 1-6, 375
Presented at:
12th International Conference on Topics in Astroparticle and Underground Physics (TAUP), Munich, GERMANY, SEP 05-09, 2011
Year:
2012
Publisher:
Bristol, Iop Publishing Ltd
ISSN:
1742-6588
Laboratories:




 Record created 2013-02-27, last modified 2018-03-17


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