TY  - EJOUR
AU  - Evoli, C.
AU  - Cholis, I.
AU  - Grasso, D.
AU  - Maccione, L.
AU  - Ullio, P.
TI  - Antiprotons from dark matter annihilation in the Galaxy: Astrophysical uncertainties
IS  - arXiv:1108.0664
M1  - PUBDB-2022-05237
M1  - arXiv:1108.0664
M1  - DESY-11-135
PY  - 2012
N1  - ISSN 1550-2368 not unique: **2 hits**.29 pages, 18 figures, 2 tables. Match to the published version in PRD. References updated/ Physical Review D, vol. 85, Issue 12, 2012
AB  - The latest years have seen steady progresses in WIMP dark matter (DM) searches, with hints of possible signals suggested by both direct and indirect detection experiments. Antiprotons can play a key role validating those interpretations since they are copiously produced by WIMP annihilations in the Galactic halo, and the secondary antiproton background produced by Cosmic Ray (CR) interactions is predicted with fair accuracy and matches the observed spectrum very well. Using the publicly available numerical DRAGON code, we reconsider antiprotons as a tool to constrain DM models discussing its power and limitations. We provide updated constraints on a wide class of annihilating DM models by comparing our predictions against the most up-to-date ap measurements, taking also into account the latest spectral information on the p, He and other CR nuclei fluxes. Doing that, we probe carefully the uncertainties associated to both secondary and DM originated antiprotons, by using a variety of distinctively different assumptions for the propagation of CRs and for the DM distribution in the Galaxy. We find that the impact of the astrophysical uncertainties on constraining the DM properties can be much stronger, up to a factor of  50, than the one due to uncertainties on the DM distribution ( 2-6). Remarkably, even reducing the uncertainties on the propagation parameters derived by local observables, non-local effects can still change DM model constraints even by 50
KW  - dark matter: annihilation (INSPIRE)
KW  - WIMP: dark matter (INSPIRE)
KW  - dark matter: galaxy: halo (INSPIRE)
KW  - anti-p: cosmic radiation (INSPIRE)
KW  - AMS (INSPIRE)
KW  - anti-p: energy spectrum (INSPIRE)
KW  - cosmic radiation: flux (INSPIRE)
KW  - cosmic radiation: propagation (INSPIRE)
KW  - cosmic radiation: energy spectrum (INSPIRE)
KW  - WIMP: mass (INSPIRE)
KW  - dark matter: density (INSPIRE)
KW  - cross section: annihilation (INSPIRE)
KW  - p: flux (INSPIRE)
KW  - anti-p: flux (INSPIRE)
KW  - Wino: dark matter (INSPIRE)
KW  - PAMELA (INSPIRE)
KW  - dark matter: mass (INSPIRE)
KW  - 95.35.+d (autogen)
KW  - cosmic rays (autogen)
KW  - elementary particles (autogen)
KW  - dark matter (autogen)
KW  - antiprotons (autogen)
LB  - PUB:(DE-HGF)25
DO  - DOI:10.3204/PUBDB-2022-05237
UR  - https://bib-pubdb1.desy.de/record/483309
ER  -