Charge ratio of ultra-high-energy cosmic-ray muons

Details Charge ratio of ultra-high-energy cosmic-ray muons Charge ratio of ultra-high-energy cosmic-ray muons

Jul 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975phrvd..12...20a&link_type=abstract

Physical Review D - Particles and Fields, 3rd Series, vol. 12, July 1, 1975, p. 20-35. NSF-supported research.

Physics

18

Electric Charge, Energy Spectra, High Energy Interactions, Muons, Primary Cosmic Rays, Angular Resolution, Bending, Curve Fitting, Data Acquisition, Histograms, Least Squares Method, Moments Of Inertia, Particle Trajectories, Ratios, Relativistic Particles

Scientific paper

Analysis of the results of the final charge-ratio experiment using a cosmic-ray muon detector. Values for the charge ratio were obtained from least-squares fits to the observed bending-angle distributions. The fitting function was the result of folding the noise scattering distribution into the ideal local-spectrum bending distribution, with the charge ratio as a parameter of the fit. This method permitted a greater precision while circumventing the main causes of charge-ratio dilution. The average value 1.378 was obtained for muon momentum at production between 1 and 8 TeV/c, corresponding to a median primary cosmic-ray momentum range 8-61 TeV/c. With the results of this experiment the charge ratio is precisely known over about three decades of muon energy beginning around 10 GeV.

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