Rights statement: © 2012 American Physical Society
Final published version, 309 KB, PDF document
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Improved measurement of muon antineutrino disappearance in MINOS. / MINOS Collaboration.
In: Physical review letters, Vol. 108, No. 19, 191801, 11.05.2012.Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Improved measurement of muon antineutrino disappearance in MINOS
AU - Adamson, P.
AU - Nowak, Jaroslaw
AU - MINOS Collaboration
N1 - © 2012 American Physical Society
PY - 2012/5/11
Y1 - 2012/5/11
N2 - We report an improved measurement of ν̅ μ disappearance over a distance of 735 km using the MINOS detectors and the Fermilab Main Injector neutrino beam in a ν̅ μ-enhanced configuration. From a total exposure of 2.95×1020 protons on target, of which 42% have not been previously analyzed, we make the most precise measurement of Δm̅ 2=[2.62-0.28+0.31(stat)±0.09(syst)]×10-3 eV2 and constrain the ν̅ μ mixing angle sin2(2θ̅ )>0.75 (90% C.L.). These values are in agreement with Δm2 and sin2(2θ) measured for νμ, removing the tension reported in [ P. Adamson et al. Phys. Rev. Lett. 107 021801 (2011)].
AB - We report an improved measurement of ν̅ μ disappearance over a distance of 735 km using the MINOS detectors and the Fermilab Main Injector neutrino beam in a ν̅ μ-enhanced configuration. From a total exposure of 2.95×1020 protons on target, of which 42% have not been previously analyzed, we make the most precise measurement of Δm̅ 2=[2.62-0.28+0.31(stat)±0.09(syst)]×10-3 eV2 and constrain the ν̅ μ mixing angle sin2(2θ̅ )>0.75 (90% C.L.). These values are in agreement with Δm2 and sin2(2θ) measured for νμ, removing the tension reported in [ P. Adamson et al. Phys. Rev. Lett. 107 021801 (2011)].
U2 - 10.1103/PhysRevLett.108.191801
DO - 10.1103/PhysRevLett.108.191801
M3 - Journal article
VL - 108
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 19
M1 - 191801
ER -