The One-Loop Correction to Heavy Dark Matter Annihilation
Abstract
We calculate the one-loop corrections to TeV scale dark matter annihilation in a model where the dark matter is described by an SU(2) triplet of Majorana fermions, such as the wino. We use this framework to determine the high and low-scale MS-bar matching coefficients at both the dark matter and weak boson mass scales at one loop. Part of this calculation has previously been performed in the literature numerically; we find our analytic result differs from the earlier work and discuss potential origins of this disagreement. Our result is used to extend the dark matter annihilation rate to NLL' (NLL+O() corrections) which enables a precise determination of indirect detection signatures in present and upcoming experiments.
Cite
@article{arxiv.1612.04814,
title = {The One-Loop Correction to Heavy Dark Matter Annihilation},
author = {Grigory Ovanesyan and Nicholas L. Rodd and Tracy R. Slatyer and Iain W. Stewart},
journal= {arXiv preprint arXiv:1612.04814},
year = {2019}
}
Comments
27 pages, 5 figures. Corrected counter-term contributions, fixing an issue first noted in 1805.07367. Impact on final results in plots is imperceptible, leaving the conclusions and numerical analysis unchanged