One-loop correction to heavy dark matter annihilation
Name
PhysRevD.95.055001.pdf
Size
2.16 MB
Format
Adobe PDF
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Author(s)
Ovanesyan, Grigory
Rodd, Nicholas Llewellyn
Slatyer, Tracy Robyn
Stewart, Iain W
Date Issued
March 2017
Journal
Physical Review D
Publisher
American Physical Society
Citation
Ovanesyan, Grigory et al. “One-Loop Correction to Heavy Dark Matter Annihilation.” Physical Review D 95.5 (2017): n. pag. © 2017 American Physical Society
Version
Final published version
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)[subscript L] triplet of Majorana fermions, such as the wino. We use this framework to determine the high- and low-scale [bar over MS] 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 next-to-leading logarithmic+O(α[subscript 2]) corrections (NLL[subscript ′]), which enables a precise determination of indirect detection signatures in present and upcoming experiments.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.95.055001
