Observation of atmospheric neutrino oscillations in Soudan 2.

Sanchez, M. ; Allison, W. W. M. ; Alner, G. J. ; Ayres, D. S. ; Barrett, W. L. ; Goodman, M.C. ; Joffe-Minor, T. ; Thron, J. L.

Argonne National Laboratory

关键词: Probability;    Neutrinos;    72 Physics Of Elementary Particles And Fields;    Oscillations;    Distribution;   

DOI  :  10.2172/815661
RP-ID  :  ANL-HEP-PR-03-59
RP-ID  :  W-31-109-ENG-38
RP-ID  :  815661

美国|英语

来源: UNT Digital Library

【 摘 要 】

The effects of oscillations of atmospheric {nu}{sub {mu}} are observed in the 5.90 fiducial kiloton-year exposure of the Soudan 2 detector. An unbinned maximum likelihood analysis of the neutrino L/E distribution has been carried out using the Feldman-Cousins prescription. The probability of the no oscillation hypothesis is 5.8 x 10{sup -4}. The 90% confidence allowed region in the sin{sup 2} 2{theta}, {Delta}m{sup 2} plane is presented.