Publication: Measurement of the underground atmospheric muon charge ratio using the MINOS Near Detector
Open/View Files
Date
2011
Published Version
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society (APS)
The Harvard community has made this article openly available. Please share how this access benefits you.
Citation
Adamson, P., C. Andreopoulos, D. J. Auty, D. S. Ayres, C. Backhouse, G. Barr, W. L. Barrett, et al. 2011. “Measurement of the Underground Atmospheric Muon Charge Ratio Using the MINOS Near Detector.” Phys. Rev. D 83 (3) (February). doi:10.1103/physrevd.83.032011.
Research Data
Abstract
The magnetized MINOS Near Detector, at a depth of 225 mwe, is used to measure the atmospheric muon charge ratio. The ratio of observed positive to negative atmospheric muon rates, using 301 days of data, is measured to be 1.266±0.001(stat)+0.015−0.014(syst). This measurement is consistent with previous results from other shallow underground detectors and is 0.108±0.019(stat+syst) lower than the measurement at the functionally identical MINOS Far Detector at a depth of 2070 mwe. This increase in charge ratio as a function of depth is consistent with an increase in the fraction of muons arising from kaon decay for increasing muon surface energies.
Description
Other Available Sources
Keywords
muon: atmosphere, charge: ratio: measured, K: decay, MINOS, near detector, muon+ muon-: ratio, muon: energy, position dependence, experimental results
Terms of Use
This article is made available under the terms and conditions applicable to Open Access Policy Articles (OAP), as set forth at Terms of Service