New constraints from PAMELA anti-proton data on annihilating and decaying dark matter
Abstract
Recently the PAMELA experiment has released its updated anti-proton flux and anti-proton to proton flux ratio data up to energies of ≈ 200GeV. With no clear excess of cosmic ray anti-protons at high energies, one can extend constraints on the production of anti-protons from dark matter. In this letter, we consider both the cases of dark matter annihilating and decaying into standard model particles that produce significant numbers of anti-protons. We provide two sets of constraints on the annihilation cross-sections/decay lifetimes. In the one set of constraints we ignore any source of anti-protons other than dark matter, which give the highest allowed cross-sections/inverse lifetimes. In the other set we include also anti-protons produced in collisions of cosmic rays with interstellar medium nuclei, getting tighter but more realistic constraints on the annihilation cross-sections/decay lifetimes.
- Authors:
-
- International School for Advanced Studies (SISSA), via Bonomea 265, 34136 Trieste (Italy)
- Publication Date:
- OSTI Identifier:
- 22277822
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Cosmology and Astroparticle Physics
- Additional Journal Information:
- Journal Volume: 2011; Journal Issue: 09; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; ANTIPROTONS; ASTROPHYSICS; COSMIC PROTONS; COSMIC RAY FLUX; COSMOLOGY; CROSS SECTIONS; LIFETIME; NONLUMINOUS MATTER; PARTICLE DECAY; PARTICLE PRODUCTION; STANDARD MODEL
Citation Formats
Cholis, Ilias. New constraints from PAMELA anti-proton data on annihilating and decaying dark matter. United States: N. p., 2011.
Web. doi:10.1088/1475-7516/2011/09/007.
Cholis, Ilias. New constraints from PAMELA anti-proton data on annihilating and decaying dark matter. United States. https://doi.org/10.1088/1475-7516/2011/09/007
Cholis, Ilias. 2011.
"New constraints from PAMELA anti-proton data on annihilating and decaying dark matter". United States. https://doi.org/10.1088/1475-7516/2011/09/007.
@article{osti_22277822,
title = {New constraints from PAMELA anti-proton data on annihilating and decaying dark matter},
author = {Cholis, Ilias},
abstractNote = {Recently the PAMELA experiment has released its updated anti-proton flux and anti-proton to proton flux ratio data up to energies of ≈ 200GeV. With no clear excess of cosmic ray anti-protons at high energies, one can extend constraints on the production of anti-protons from dark matter. In this letter, we consider both the cases of dark matter annihilating and decaying into standard model particles that produce significant numbers of anti-protons. We provide two sets of constraints on the annihilation cross-sections/decay lifetimes. In the one set of constraints we ignore any source of anti-protons other than dark matter, which give the highest allowed cross-sections/inverse lifetimes. In the other set we include also anti-protons produced in collisions of cosmic rays with interstellar medium nuclei, getting tighter but more realistic constraints on the annihilation cross-sections/decay lifetimes.},
doi = {10.1088/1475-7516/2011/09/007},
url = {https://www.osti.gov/biblio/22277822},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 09,
volume = 2011,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 2011},
month = {Thu Sep 01 00:00:00 EDT 2011}
}