Search for superheavy grand unified magnetic monopoles in cosmic rays

Journal Article · Fri May 01 04:00:00 EDT 1987 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.35.2917· OSTI ID:5951453

Shepko, M J; Gagliardi, C A; Green, P J; McIntyre, P M; Meyer, T; Tribble, R E; Webb, R C

A search for superheavy grand unified magnetic monopoles has been performed utilizing a 7.3 x 7.3-m/sup 2/ array of scintillation counters, sited underground at a depth of 1148 hg/cm/sup 2/. This apparatus measures both the time of flight and specific ionization of particles passing through it and has a trigger which is sensitive to prompt as well as very slowly developing pulses from the detector. No monopole events were observed during 6700 h of live-time operation of this detector, yielding an upper limit on the flux of monopoles of 4.6 x 10/sup -14/ cm/sup -2/sr/sup -1/sec/sup -1/ (90% confidence level) in the velocity range 8.5 x 10/sup -4/c to 0.012c.

• Research Organization: Physics Department, Texas A and M University, College Station, Texas 77843
• OSTI ID: 5951453
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 35:9; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

640106* -- Astrophysics & Cosmology-- Cosmology
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BACKGROUND RADIATION
COSMIC RADIATION
COSMIC RAY DETECTION
DETECTION
ELEMENTARY PARTICLES
FIELD THEORIES
GALAXIES
GRAND UNIFIED THEORY
IONIZING RADIATIONS
MAGNETIC FIELDS
MAGNETIC MONOPOLES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MONOPOLES
PARTICLE IDENTIFICATION
PARTICLE MODELS
POSTULATED PARTICLES
RADIATION DETECTION
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES