The Top-Down Interpretation of Ultra-High Energy Cosmic Rays | Zendy

Manuel Drees | Zendy

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The Top-Down Interpretation of Ultra-High Energy Cosmic Rays

Author(s) -

Manuel Drees

Publication year - 2008

Publication title -

journal of the physical society of japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.76

H-Index - 139

eISSN - 1347-4073

pISSN - 0031-9015

DOI - 10.1143/jpsjs.77sb.16

Subject(s) - physics , cosmic ray , neutrino , ultra high energy cosmic ray , astrophysics , energy spectrum , interpretation (philosophy) , cosmic cancer database , nuclear physics , particle physics , computer science , programming language

The origin of Ultra--High Energy ($E \gsim 10^{20}$ eV) Cosmic Rays (UHECR)remains mysterious. I discuss ``top--down'' models, where UHECR originate fromthe decay of very massive, long--lived particles. I summarize the calculationof the spectrum of decay products, discuss possible problems with thisscenario, and describe ways to test it by searching for very energeticneutrinos and neutralinos.

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