Phys. Rev. 166, 1280 - 1282 (1968)Search for Quarks in Cosmic Rays at Sea Level |
G. Garmire *, C. Leong, and B. V. Sreekantan †
Laboratory for Nuclear Science, Physics Department, Massachusetts Institute of Technology, Cambridge, Massachusetts
Received 13 October 1967
A search for quarks has been conducted at sea level. No events have been found with energy losses by ionization in the range 0.06-0.165 and 0.25-0.65 that of singly charged minimum-ionizing particles. The experiment sets an upper limit on the fluxes as 6.6×10-11 and 8.8×10-11 cm-2 sr-1 sec-1 for 1 / 3e and 2 / 3e minimum-ionizing quarks, respectively.
©1968 The American Physical Society
URL: http://link.aps.org/abstract/PR/v166/p1280
DOI: 10.1103/PhysRev.166.1280
* On leave of absence at California Institute of Technology, Pasadena, Calif.
† Present address: Tata Institute of Fundamental Research, Bombay, India.
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