Observation of muon neutrino disappearance with the MINOS detectors and the NuMI neutrino beam

Journal Article · Sat Jul 01 00:00:00 EDT 2006 · Phys.Rev.Lett.97:191801,2006

DOI:https://doi.org/10.1103/PhysRevLett.97.191801· OSTI ID:892498

Michael, D G; Adamson, P; Alexopoulos, T; Allison, W W.M.; Alner, G J; Anderson, K; Andreopoulos, C; Andrews, M; Andrews, R; Arms, K E; Armstrong, R

This letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rates and energy spectra of charged current {nu}{sub {mu}} interactions are compared in two detectors located along the beam axis at distances of 1 km and 735 km. With 1.27 x 10{sup 20} 120GeV protons incident on the NuMI target, 215 events with energies below 30GeV are observed at the Far Detector, compared to an expectation of 336 {+-} 14.4 events. The data are consistent with {nu}{sub {mu}} disappearance via oscillations with |{Delta}m{sub 32}{sup 2}| = 2.74{sub -0.26}{sup +0.44} x 10{sup -3} eV{sup 2}/c{sup 4} and sin{sup 2} (2{theta}{sub 23}) > 0.87 (68% C.L.).

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 892498
• Report Number(s): FERMILAB-PUB-06-243; PRLTAO; arXiv eprint number hep-ex/0607088; TRN: US200711%%466
• Journal Information: Phys.Rev.Lett.97:191801,2006, Vol. 97; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGED CURRENTS
ENERGY SPECTRA
FERMILAB
MUON NEUTRINOS
NEUTRINO BEAMS
NEUTRINOS
OSCILLATIONS
PROTONS
Experiment-HEP