A SEARCH FOR MASSIVE PARTICLES IN COSMIC RAYS.
Abstract
A search for long-lived particles (> approx. 0.000006) of mass in the range of about 5-15 BeV was carried out among cosmic rays at the summit of Mt. Evans, Colorado, by measuring time intervals between the arrival of strongly interacting particles of energy > approx. 70 GeV and accompanying air shower particles. From the absence of delayed strongly interacting particles in the range 40-180 ns where particles of nucleonic mass are not allowed, it is concluded that an upper limit of 160 microbarns/nucleon could be placed on the cross-section for production of particles of mass around 8 BeV at energies not far above threshold in nucleon-nucleon collisions. This limit is subject to certain restrictive assumptions about the behavior of the hypothetical massive particles, which are discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 18, 1966
- Accession Number
- AD0635818
Entities
People
- B. Dayton F.
- L. W. Jones
- Mills Radner C.
- U. Camerina