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Title: Is there strange-quark matter in galactic cosmic rays

Abstract

In the analysis of background events from a counter-technique experiment to study cosmic-ray nuclei above 8-GV rigidity two events were observed which are consistent with the assumption of {ital Z}{similar to}14, {ital A}{similar to}350, and 450 MeV/nucleon, and which cannot be acocunted for by more conventional background. Such events may be explained by the hypothesis of strange-quark matter (SQM). It is concluded that the existence of SQM has not been excluded by experiment at a flux level of {similar to}6{times}10{sup {minus}9} cm{sup {minus}2} s{sup {minus}1} sr{sup {minus}1}.

Authors:
; ;  [1];  [2]
  1. (Institute for Cosmic Ray Research, University of Tokyo, Tanashi, Tokyo (Japan))
  2. (Department of Physics, Kobe University, Kobe (Japan))
Publication Date:
OSTI Identifier:
6316698
Resource Type:
Journal Article
Journal Name:
Physical Review Letters; (USA)
Additional Journal Information:
Journal Volume: 65:17; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMIC RADIATION; QUARK MATTER; CALIBRATION; CHERENKOV COUNTERS; EXPERIMENTAL DATA; GALAXIES; GEV RANGE 01-10; MAGNESIUM; NEON; NUCLEI; SILICON; STRANGE PARTICLES; UNIVERSE; ALKALINE EARTH METALS; DATA; ELEMENTARY PARTICLES; ELEMENTS; ENERGY RANGE; FLUIDS; GASES; GEV RANGE; INFORMATION; IONIZING RADIATIONS; MATTER; MEASURING INSTRUMENTS; METALS; NONMETALS; NUMERICAL DATA; RADIATION DETECTORS; RADIATIONS; RARE GASES; SEMIMETALS; 640101* - Astrophysics & Cosmology- Cosmic Radiation

Citation Formats

Saito, T., Hatano, Y., Fukada, Y., and Oda, H. Is there strange-quark matter in galactic cosmic rays. United States: N. p., 1990. Web. doi:10.1103/PhysRevLett.65.2094.
Saito, T., Hatano, Y., Fukada, Y., & Oda, H. Is there strange-quark matter in galactic cosmic rays. United States. doi:10.1103/PhysRevLett.65.2094.
Saito, T., Hatano, Y., Fukada, Y., and Oda, H. Mon . "Is there strange-quark matter in galactic cosmic rays". United States. doi:10.1103/PhysRevLett.65.2094.
@article{osti_6316698,
title = {Is there strange-quark matter in galactic cosmic rays},
author = {Saito, T. and Hatano, Y. and Fukada, Y. and Oda, H.},
abstractNote = {In the analysis of background events from a counter-technique experiment to study cosmic-ray nuclei above 8-GV rigidity two events were observed which are consistent with the assumption of {ital Z}{similar to}14, {ital A}{similar to}350, and 450 MeV/nucleon, and which cannot be acocunted for by more conventional background. Such events may be explained by the hypothesis of strange-quark matter (SQM). It is concluded that the existence of SQM has not been excluded by experiment at a flux level of {similar to}6{times}10{sup {minus}9} cm{sup {minus}2} s{sup {minus}1} sr{sup {minus}1}.},
doi = {10.1103/PhysRevLett.65.2094},
journal = {Physical Review Letters; (USA)},
issn = {0031-9007},
number = ,
volume = 65:17,
place = {United States},
year = {1990},
month = {10}
}