Ultra High Energy Cosmic Rays: Strangelets?

Chin. Phys. Lett.

2003, Vol. 20

Issue (6): 806-809 DOI:

Original Articles

Ultra High Energy Cosmic Rays: Strangelets?

XU Ren-Xin;WU Fei

School of Physics, Peking University, Beijing 100871

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XU Ren-Xin, WU Fei 2003 Chin. Phys. Lett. 20 806-809

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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^-26cm^-2 s^-1 if there are two extra spatial dimensions.

Keywords: 04.70.Dy 12.38.Mh 13.85.T 97.60.Jd

Published: 01 June 2003

PACS:	04.70.Dy	(Quantum aspects of black holes, evaporation, thermodynamics)
	12.38.Mh	(Quark-gluon plasma)
	13.85.T
	97.60.Jd	(Neutron stars)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2003/V20/I6/0806

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