Fractionally Charged Particles in Cosmic Rays? Reevaluation of the Data

Details Fractionally Charged Particles in Cosmic Rays? Reevaluation of the Data Fractionally Charged Particles in Cosmic Rays? Reevaluation of the Data

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....3.1611b&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

Scientific paper

The search for fractionally charged particles has been performed at Aragatz Cosmic Ray Station in 1975. The apparatus consisted of a hadron calorimeter, multilayer proportional counters and a ho doscope. Only single hadrons with energy > 80 GeV were observed. about 10% of their flux had an ionization 1.4 times higher than protons. supposing di-quarks with a charge 4/3e may be registered their mass can be evaluated as about 30 GeV. An average energy calculated for those suspicious events was much higher (355 GeV) than for general proton/pion peak (205 GeV). It may show that their energy spectrum has a slope and/or cutoff, which is different from proton/pion spectrum. Preliminary analysis of the ATIC first flight data has also shown anomalous region in the proton charge distribution, which may indicate that fractionally charged particles with an unusual energy spectrum are present in cosmic rays.

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