Ultra High Energy Cosmic Rays: Strangelets?
XU Ren-Xin, WU Fei
School of Physics, Peking University, Beijing 100871
Ultra High Energy Cosmic Rays: Strangelets?
XU Ren-Xin;WU Fei
School of Physics, Peking University, Beijing 100871
关键词 ：
04.70.Dy ,
12.38.Mh ,
13.85.T ,
97.60.Jd
Abstract ： The conjecture that ultra high energy cosmic rays (UHECRs) are actually strangelets is discussed. Besides the reason that strangelets can do as cosmic rays beyond the Greisen-Zatsepin-Kuzmin-cutoff, another argument to support the conjecture is addressed by the study of formation of TeV-scale microscopic black holes when UHECRs bombarding bare strange stars. It is proposed that the exotic quark surface of a bare strange star could be an effective astro-laboratory in the investigations of the extra dimensions and of the detection of ultra-high energy neutrino fluxes. The flux of neutrinos (and other point-like particles) with energy larger than 2.3 x 1020 eV could be expected to be smaller than 10-26 cm-2 s-1 if there are two extra spatial dimensions.
Key words ：
04.70.Dy
12.38.Mh
13.85.T
97.60.Jd
出版日期: 2003-06-01
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2003, Vol. 20 
