Measurements of the charge ratio and polarization of 1.2-TeV/c cosmic-ray muons with the Kamiokande II detector

Details Measurements of the charge ratio and polarization of 1.2-TeV/c cosmic-ray muons with the Kamiokande II detector Measurements of the charge ratio and polarization of 1.2-TeV/c cosmic-ray muons with the Kamiokande II detector

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvd..44..617y&link_type=abstract

Physical Review D (Particles and Fields), Volume 44, Issue 3, 1 August 1991, pp.617-621

Physics

6

Scientific paper

We measured the charge ratio and the polarization of the high-energy cosmic-ray muons arriving with zenith angles from 0° to 90° in the large underground water Cherenkov detector, Kamiokande II. The charge ratio [R(μ+/μ-)] and the polarization (P0) are found to be 1.37+/-0.06(stat)+/-0.01(syst) and 0.26+/-0.04(stat)+/-0.05(syst), respectively, at the sea-level momentum of 1.2 TeV/c. This result for the charge ratio is in good agreement with those previously obtained in experiments using magnetic spectrometers at sea level and underground. This is the first measurement of the polarization of the cosmic-ray muons in the TeV region.

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