TeV scale Dark Matter and electroweak radiative corrections

Details TeV scale Dark Matter and electroweak radiative corrections TeV scale Dark Matter and electroweak radiative corrections

2010-01-22

arxiv.org/abs/1001.3950v3

Phys.Rev.D82:043512,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

Comments added, published version

Scientific paper

10.1103/PhysRevD.82.043512

Recent anomalies in cosmic rays data, namely from the PAMELA collaboration, can be interpreted in terms of TeV scale decaying/annihilating Dark Matter. We analyze the impact of radiative corrections coming from the electroweak sector of the Standard Model on the spectrum of the final products at the interaction point. As an example, we consider virtual one loop corrections and real gauge bosons emission in the case of a very heavy vector boson annihilating into fermions. We show that the effect of electroweak corrections is relevant, but not as big as sometimes claimed in the literature. At such high scales, one loop electroweak effects are so big that eventually higher orders/resummations have to be considered: we advocate for the inclusion of these effects in parton shower Montecarlos aiming at the description of TeV scale physics.

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