Charge-separated atmospheric neutrino-induced muons in the MINOS far detector

Adamson, P, Auty, D J, Falk Harris, E, Harris, P G, MINOS Collaboration, and Unset (2007) Charge-separated atmospheric neutrino-induced muons in the MINOS far detector. Physical Review D, 75 (9). 092003. ISSN 1550-7998

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We found 140 neutrino-induced muons in 854.24 live days in the MINOS far detector. We looked for evidence of neutrino disappearance in this data set by computing the ratio of the number of low momentum muons to the sum of the number of high momentum and unknown momentum muons for both data and Monte Carlo expectation in the absence of neutrino oscillations. The ratio of data and Monte Carlo ratios is consistent with an oscillation signal. A fit to the data for the oscillation parameters excludes the null oscillation hypothesis at the 94% confidence level. We separated the muons by charge sign in both the data and Monte Carlo events and found the ratio of the total number of negative to positive muons in both samples. The ratio of those ratios is a test of CPT conservation. The result is consistent with CPT conservation.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: David Auty
Date Deposited: 06 Feb 2012 18:30
Last Modified: 13 Mar 2017 23:37

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