Observation of Muon Neutrino Disappearance with the MINOS Detectors in the NuMI Neutrino Beam

Journal Article · Fri Nov 10 04:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.191801· OSTI ID:20861096

Michael, D G; Barish, B; Hanson, J; Kim, H; Newman, H B; Ochoa-Ricoux, J P; Peck, C W; Trevor, J; Zheng, H ^[1]; Adamson, P ^[2]; Alexopoulos, T; Erwin, A R; Ping, H; Velissaris, C ^[3]; Allison, W W. M.; Barker, M A; Barr, G; Cabrera, A; Cobb, J H; De Santo, A ^[4]

---

1. Lauritsen Laboratory, California Institute of Technology, Pasadena, California 91125 (United States)
2. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
3. Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (United States)
4. Subdepartment of Particle Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH (United Kingdom)

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 and 735 km. With 1.27x10{sup 20} 120 GeV protons incident on the NuMI target, 215 events with energies below 30 GeV are observed at the Far Detector, compared to an expectation of 336{+-}14 events. The data are consistent with {nu}{sub {mu}} disappearance via oscillations with vertical bar {delta}m{sub 32}{sup 2} vertical bar =2.74{sub -0.26}{sup +0.44}x10{sup -3} eV{sup 2} and sin{sup 2}(2{theta}{sub 23})>0.87 (68% C.L.)

• OSTI ID: 20861096
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 97; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGED CURRENTS
ENERGY SPECTRA
FERMILAB
GEV RANGE 100-1000
MUON NEUTRINOS
NEUTRINO BEAMS
NEUTRINO OSCILLATION
PROTON BEAMS
PROTONS