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Title: One-loop correction to heavy dark matter annihilation

Journal Article · · Physical Review D
 [1];  [2]; ORCiD logo [2];  [2]
  1. Univ. of Massachusetts, Amherst, MA (United States). Dept. of Physics
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Center for Theoretical Physics

In this report, 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 ) L triplet of Majorana fermions, such as the wino. We use this framework to determine the high- and low-scale 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 finding is used to extend the dark matter annihilation rate to next-to-leading logarithmic + O ( α 2 ) corrections ( NLL ' ), which enables a precise determination of indirect detection signatures in present and upcoming experiments.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); Simons Foundation; American Australian Association
Grant/Contract Number:
SC0013999; SC00012567; SC0011090
OSTI ID:
1596612
Alternate ID(s):
OSTI ID: 1345687
Report Number(s):
MIT-CTP-4852; PRVDAQ; arXiv:1612.04814; TRN: US2102896
Journal Information:
Physical Review D, Vol. 95, Issue 5; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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