Search for active neutrino disappearance using neutral-current interactions in the MINOS long-baseline experiment.
We report the first detailed comparisons of the rates and spectra of neutral-current neutrino interactions at two widely separated locations. A depletion in the rate at the far site would indicate mixing between nu(mu) and a sterile particle. No anomalous depletion in the reconstructed energy spectrum is observed. Assuming oscillations occur at a single mass-squared splitting, a fit to the neutral- and charged-current energy spectra limits the fraction of nu(mu) oscillating to a sterile neutrino to be below 0.68 at 90% confidence level. A less stringent limit due to a possible contribution to the measured neutral-current event rate at the far site from nu(e) appearance at the current experimental limit is also presented.
Adamson
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Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
Andreopoulos
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Arms
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Armstrong
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Auty
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Ayres
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Backhouse
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Baller
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Barr
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Barrett
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Becker
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Belias
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Bernstein
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Bhattacharya
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Bishai
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Blake
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Bock
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Boehm
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Boehnlein
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Bogert
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Bower
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Buckley-Geer
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Cavanaugh
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Chapman
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Cherdack
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Childress
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Choudhary
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Cobb
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Coleman
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Culling
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de Jong
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Dierckxsens
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Diwan
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Dorman
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Dytman
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Escobar
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Evans
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Harris
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Feldman
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Frohne
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Gallagher
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Godley
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Goodman
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Gouffon
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Gran
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Grashorn
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Grossman
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Grzelak
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Habig
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Harris
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Harris
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Hartnell
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Hatcher
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Heller
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Himmel
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Holin
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Hsu
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Hylen
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Irwin
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Ishitsuka
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Jaffe
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James
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Jensen
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Kafka
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Kasahara
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Kim
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Kim
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Koizumi
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Kopp
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Kordosky
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Koskinen
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Kotelnikov
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Kreymer
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Kumaratunga
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Lang
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Ling
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Litchfield
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Litchfield
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Loiacono
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Lucas
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Ma
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Mann
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Marchionni
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Marshak
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Marshall
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Mayer
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McGowan
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Meier
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Messier
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Metelko
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Michael
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Miller
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Mishra
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Moore
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Morfín
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Mualem
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Mufson
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Murgia
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Musser
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Naples
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Nelson
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Newman
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Nichol
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Nicholls
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Ochoa-Ricoux
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Oliver
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Ospanov
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Paley
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Paolone
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Para
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Patzak
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Pavlović
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Pawloski
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Pearce
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Peck
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Petyt
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Pittam
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Plunkett
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Rahaman
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Rameika
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Raufer
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Rebel
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Reichenbacher
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Rodrigues
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Rosenfeld
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Rubin
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Ryabov
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Sanchez
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Saoulidou
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Schneps
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Schreiner
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Shanahan
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Smart
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Smith
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Sousa
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Speakman
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Stamoulis
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Strait
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Tagg
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Talaga
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Tavera
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Thomas
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Thomson
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Thron
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Tinti
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Trostin
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Tsarev
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Tzanakos
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Urheim
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Vahle
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Viren
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Ward
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Watabe
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Weber
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Webb
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Wehmann
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West
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White
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Wojcicki
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Wright
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Yang
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Zhang
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Zwaska
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