Precise yield of high-energy photons from Higgsino dark matter annihilation
نویسندگان
چکیده
منابع مشابه
High Energy Neutrinos From Superheavy Dark Matter Annihilation
(Dated: August 2000) Abstract Superheavy (M > 10 GeV) particles produced during inflation may be the dark matter, independent of their interaction strength. Strongly interacting superheavy particles will be captured by the sun, and their annihilation in the center of the sun will produce a flux of energetic neutrinos that should be detectable by neutrino telescopes. Depending on the particle ma...
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Explaining the origin of cosmic rays at energies above the Greisen–Zatsepin–Kuzmin bound EGZK ≃ 4×10 eV is an interesting and puzzling scientific challenge for several reasons: AGASA observes a flux of order of one cosmic ray event per 100 km per year at energies above 10 eV [1], thus confirming the flux seen by previous smaller ground based arrays on the northern hemisphere, see e.g. [2]. On t...
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We consider the possibility that ultra-high energy cosmic rays originate from the annihilation of relic superheavy darkmatter.We find that a cross section of 〈σAv〉 ∼ 10cm(MX/10 GeV)3/2 is required to account for the observed rate of super-GZK events if the superheavy dark matter follows a Navarro–Frenk–White density profile. This would require extremely large-l contributions to the annihilation...
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We claim that the Higgsino-like and wino-like neutralinos can be good dark matter candidates if they are produced by the late time decay of Q-ball. The late time decays of the Q-balls into these LSP’s and subsequent pair annihilations of the LSP’s naturally lead to the desired mass density of dark matter. Furthermore, these dark matter can be much more easily detected by the dark-matter search ...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2020
ISSN: 1029-8479
DOI: 10.1007/jhep03(2020)030