TeV scale Dark Matter and electroweak radiative corrections

TL;DR

This paper investigates how electroweak radiative corrections influence the spectrum of particles resulting from TeV scale dark matter interactions, emphasizing their significance for interpreting cosmic ray anomalies.

Contribution

It provides a detailed analysis of electroweak corrections at TeV scales, highlighting their importance and advocating for their inclusion in Monte Carlo simulations.

Findings

Electroweak corrections significantly affect the final particle spectrum.

One-loop electroweak effects are substantial at TeV scales.

Higher-order effects and resummations are necessary for accurate modeling.

Abstract

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.