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Title: Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays

Abstract

A possible hint of dark matter annihilation has been found in Cuoco, Korsmeier and Krämer (2017) from an analysis of recent cosmic-ray antiproton data from AMS-02 and taking into account cosmic-ray propagation uncertainties by fitting at the same time dark matter and propagation parameters. Here, we extend this analysis to a wider class of annihilation channels. We find consistent hints of a dark matter signal with an annihilation cross-section close to the thermal value and with masses in range between 40 and 130 GeV depending on the annihilation channel. Furthermore, we investigate in how far the possible signal is compatible with the Galactic center gamma-ray excess and recent observation of dwarf satellite galaxies by performing a joint global fit including uncertainties in the dark matter density profile. As an example, we interpret our results in the framework of the Higgs portal model.

Authors:
; ; ;  [1]
  1. Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, 52056 Aachen (Germany)
Publication Date:
OSTI Identifier:
22667612
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; ANTIPROTONS; COSMIC RADIATION; COSMIC RAY PROPAGATION; CROSS SECTIONS; DENSITY; GALAXIES; GAMMA RADIATION; GEV RANGE; HIGGS BOSONS; HIGGS MODEL; MASS; NONLUMINOUS MATTER; SATELLITES

Citation Formats

Cuoco, Alessandro, Heisig, Jan, Korsmeier, Michael, and Krämer, Michael, E-mail: cuoco@physik.rwth-aachen.de, E-mail: heisig@physik.rwth-aachen.de, E-mail: korsmeier@physik.rwth-aachen.de, E-mail: mkraemer@physik.rwth-aachen.de. Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/10/053.
Cuoco, Alessandro, Heisig, Jan, Korsmeier, Michael, & Krämer, Michael, E-mail: cuoco@physik.rwth-aachen.de, E-mail: heisig@physik.rwth-aachen.de, E-mail: korsmeier@physik.rwth-aachen.de, E-mail: mkraemer@physik.rwth-aachen.de. Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays. United States. doi:10.1088/1475-7516/2017/10/053.
Cuoco, Alessandro, Heisig, Jan, Korsmeier, Michael, and Krämer, Michael, E-mail: cuoco@physik.rwth-aachen.de, E-mail: heisig@physik.rwth-aachen.de, E-mail: korsmeier@physik.rwth-aachen.de, E-mail: mkraemer@physik.rwth-aachen.de. Sun . "Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays". United States. doi:10.1088/1475-7516/2017/10/053.
@article{osti_22667612,
title = {Probing dark matter annihilation in the Galaxy with antiprotons and gamma rays},
author = {Cuoco, Alessandro and Heisig, Jan and Korsmeier, Michael and Krämer, Michael, E-mail: cuoco@physik.rwth-aachen.de, E-mail: heisig@physik.rwth-aachen.de, E-mail: korsmeier@physik.rwth-aachen.de, E-mail: mkraemer@physik.rwth-aachen.de},
abstractNote = {A possible hint of dark matter annihilation has been found in Cuoco, Korsmeier and Krämer (2017) from an analysis of recent cosmic-ray antiproton data from AMS-02 and taking into account cosmic-ray propagation uncertainties by fitting at the same time dark matter and propagation parameters. Here, we extend this analysis to a wider class of annihilation channels. We find consistent hints of a dark matter signal with an annihilation cross-section close to the thermal value and with masses in range between 40 and 130 GeV depending on the annihilation channel. Furthermore, we investigate in how far the possible signal is compatible with the Galactic center gamma-ray excess and recent observation of dwarf satellite galaxies by performing a joint global fit including uncertainties in the dark matter density profile. As an example, we interpret our results in the framework of the Higgs portal model.},
doi = {10.1088/1475-7516/2017/10/053},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 10,
volume = 2017,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 2017},
month = {Sun Oct 01 00:00:00 EDT 2017}
}