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Title: Indirect detection constraints on s- and t-channel simplified models of dark matter

Journal Article · · Physical Review D

Recent Fermi-LAT observations of dwarf spheroidal galaxies in the Milky Way have placed strong limits on the gamma-ray flux from dark matter annihilation. In order to produce the strongest limit on the dark matter annihilation cross-section, the observations of each dwarf galaxy have typically been "stacked" in a joint-likelihood analysis, utilizing optical observations to constrain the dark matter density profile in each dwarf. These limits have normally been computed only for singular annihilation final states, such as $$b\bar{b}$$ or $$\tau^+\tau^-$$. In this paper, we generalize this approach by producing an independent joint-likelihood analysis to set constraints on models where the dark matter particle annihilates to multiple final state fermions. We interpret these results in the context of the most popular simplified models, including those with s- and t-channel dark matter annihilation through scalar and vector mediators. We introduce our findings as constraints on the minimum dark matter mass and the mediator sector parameters. Additionally, we compare our simplified model results to those of Effective Field Theory contact interactions in the high-mass limit.

Research Organization:
The Ohio State Univ., Columbus, OH (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); National Aeronautics and Space Administration
Grant/Contract Number:
SC0011726; PF3-140110; SC0013529
OSTI ID:
1602506
Alternate ID(s):
OSTI ID: 1325844
Journal Information:
Physical Review D, Vol. 94, Issue 5; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Cited By (4)

Bayesian analysis of sneutrino dark matter in the NMSSM with a type-I seesaw mechanism journal June 2019
The waning of the WIMP? A review of models, searches, and constraints journal March 2018
The diphoton signal of the light Higgs boson in Natural NMSSM text January 2016
The Waning of the WIMP? A Review of Models, Searches, and Constraints text January 2017

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