The atmospheric neutrino flavor ratio from a 3.9 fiducial kiloton-year exposure of Soudan 2

Journal article

We report a measurement of the atmospheric neutrino flavor ratio, R, using a sample of quasi-elastic neutrino interactions occurring in an iron medium. The flavor ratio (tracks/showers) of atmospheric neutrinos in a 3.9 fiducial kiloton-year exposure of Soudan 2 is 0.64 ± 0.11(stat.) ± 0.06(syst.) of that expected. Important aspects of our main analysis have been checked by carrying out two independent, alternative analyses; one is based upon automated scanning, the other uses a multivariate approach for background subtraction. Similar results are found by all three approaches. © 1999 Elsevier Science B.V. All rights reserved.

Authors: Allison, W; Alner, G; Ayres, D; Barr, G; Barrett, W

• Publication status: Published
• Journal: Physics Letters B
• Volume: 449
• Issue: 1-2
• Pages: 137-144
• Publication date: 1999-03-04
• DOI: 10.1016/S0370-2693(99)00056-8
• ISSN: 0370-2693
• Language: English