Experimental study of muon bundles observed in the Fréjus detector

The present study is based on a sample of 407 775 single muons and 12 559 muon bundles with zenith angles smaller than 60{degree}, observed in the 12.3 m{times}6 m{times}6 m Frejus proton-decay detector, at a depth of 4850 hg/cm{sup 2}. The variation of the vertical muon intensity with depth is give...

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Bibliographic Details
Published in:Physical review. D, Particles and fields Particles and fields, 1989-10, Vol.40 (7), p.2163-2171
Main Authors: BERGER, C, FRÖHLICH, M, ESCHSTRUTH, P, JULLIAN, S, LALANNE, D, LAPLANCHE, F, LONGUEMARE, C, PAULOT, C, PERDEREAU, O, ROY, P, SZKLARZ, G, BEHR, L, MÖNCH, H, DEGRANGE, B, MINET, Y, NGUYEN-KHAC, U, SERRI, P, TISSERAND, S, NISIUS, R, RAUPACH, F, SCHLEPER, P, BENADJAL, Y, BLUM, D, BOURDARIOS, C, DUDELZAK, B
Format: Article
Language:English
Subjects:
640101 - Astrophysics & Cosmology- Cosmic Radiation
645102 - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties
ANGULAR DISTRIBUTION
Astronomy
BARYONS
CHARGED PARTICLE DETECTION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COSMIC MUONS
COSMIC RADIATION
DECAY
DETECTION
DISTRIBUTION
Earth, ocean, space
ELEMENTARY PARTICLES
Exact sciences and technology
FERMIONS
HADRONS
Interplanetary space
IONIZING RADIATIONS
LEPTONS
MAXIMUM-LIKELIHOOD FIT
MULTIPLICITY
MUON DETECTION
MUONS
NUCLEONS
NUMERICAL SOLUTION
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PROTONS
RADIATION DETECTION
RADIATIONS
SIMULATION
Solar system
UNDERGROUND FACILITIES
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Summary:The present study is based on a sample of 407 775 single muons and 12 559 muon bundles with zenith angles smaller than 60{degree}, observed in the 12.3 m{times}6 m{times}6 m Frejus proton-decay detector, at a depth of 4850 hg/cm{sup 2}. The variation of the vertical muon intensity with depth is given. Using a maximum-likelihood method, the muon lateral distribution of underground bundles is investigated as a function of muon multiplicity and zenith angle. The same method yields the true multiplicity distribution at the site depth, corrected for all detection effects.
ISSN:0556-2821
1089-4918
DOI:10.1103/PhysRevD.40.2163