Simplified dark matter models in the light of AMS-02 antiproton data

Simplified dark matter models in the light of AMS-02 antiproton data

A bstract In this work we perform an analysis of the recent AMS-02 antiproton flux and the antiproton-to-proton ratio in the framework of simplified dark matter models. To predict the AMS-02 observables we adopt the propagation and injection parameters determined by the observed fluxes of nuclei. We...

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Bibliographic Details
Published in:The journal of high energy physics Vol. 2017; no. 4; pp. 1 - 17
Main Author: Li, Tong
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-04-2017
Springer Nature B.V
SpringerOpen
Subjects:
Alpha Magnetic Spectrometer
Antiparticles
Antiprotons
Beyond Standard Model
Classical and Quantum Gravitation
Confidence intervals
Cosmology of Theories beyond the SM
Cross sections
Dark matter
Elementary Particles
Flux
Fluxes
High energy physics
Mathematical models
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Standard model (particle physics)
String Theory
Beyond Standard Model
Cosmology of Theories beyond the SM
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Summary:A bstract In this work we perform an analysis of the recent AMS-02 antiproton flux and the antiproton-to-proton ratio in the framework of simplified dark matter models. To predict the AMS-02 observables we adopt the propagation and injection parameters determined by the observed fluxes of nuclei. We assume that the dark matter particle is a Dirac fermionic dark matter, with leptophobic pseudoscalar or axialvector mediator that couples only to Standard Model quarks and dark matter particles. We find that the AMS-02 observations are consistent with the dark matter framework within the uncertainties. The antiproton data prefer a dark matter (mediator) mass in the 700 GeV-5 TeV region for the annihilation with pseudoscalar mediator and greater than 700 GeV (200 GeV-1 TeV) for the annihilation with axialvector mediator, respectively, at about 68% confidence level. The AMS-02 data require an effective dark matter annihilation cross section in the region of 1×10 −25 −1×10 −24 (1×10 −25 −4×10 −24 ) cm 3 /sforthesimplifiedmodelwithpseudoscalar (axialvector) mediator. The constraints from the LHC and Fermi-LAT are also discussed.
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ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP04(2017)112