Hunting for superheavy dark matter with the highest-energy cosmic rays

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00546483" target="_blank" >RIV/68378271:_____/19:00546483 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.99.103016" target="_blank" >https://doi.org/10.1103/PhysRevD.99.103016</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.99.103016" target="_blank" >10.1103/PhysRevD.99.103016</a>

Result language
angličtina
Original language name
Hunting for superheavy dark matter with the highest-energy cosmic rays
Original language description
In 15 years of data taking, the Pierre Auger Observatory has observed no events beyond 10(11.3) GeV. This null result translates into an upper bound on the flux of ultrahigh-energy cosmic rays, implying J(> 10(11.3) GeV) < 3.6 x 10(-5) km(-2) sr(-1) yr(-1), at the 90% C.L. We interpret this bound as a constraint on extreme-energy photons originating in the decay super-heavy dark matter (SHDM) particles clustered in the Galactic halo. Armed with this constraint, we derive the strongest lower limit on the lifetime of hadronically decayingSHDMparticleswithmasses in the range 10(14) less than or similar to M-X/GeV less than or similar to 10(16). We also explore the capability of NASA's future Probe of Extreme Multi-Messenger Astrophysics mission to search for SHDM signals.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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