The Observation of upgoing charged particles produced by high-energy muons in underground detectors
Collaboration
18 pages
Published in:
- Astropart.Phys. 9 (1998) 105-117
e-Print:
- hep-ex/9807032 [hep-ex]
Report number:
- INFN-AE-97-55
Experiments:
View in:
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Abstract: (Elsevier)
An experimental study of the production of up-going charged particles in inelastic interactions of down-going underground muons is reported, using data obtained from the MACRO detector at the Gran Sasso Laboratory. In a sample of 12.2 × 10 6 single muons, corresponding to a detector lifetime of 1.55 y , 243 events are observed having an up-going particle associated with a down-going muon. These events are analysed to determine the range and emission angle distributions of the up-going particle, corrected for detection and reconstruction efficiency.
Measurements of the muon neutrino flux by underground detectors are often based on the observation of through-going and stopping muons produced in ν μ interactions in the rock below the detector. Up-going particles produced by an undetected down-going muon are a potential background source in these measurements. The implications of this background for neutrino studies using MACRO are discussed.Note:
- 18 pages, 9 figures. Accepted by Astrop. Physics Report-no: INFN-AE 97/55
- muon: cosmic radiation
- muon nucleus: interaction
- pi: electroproduction
- angular distribution
- pi: particle identification
- efficiency
- neutrino/mu: particle identification
- background
- numerical calculations: Monte Carlo
- MACRO
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