PT Journal
AU T2K Collaboration (Abe, Kea
   Cervera-Villanueva, A
   Izmaylov, A
   Novella, P
   Sorel, M
TI Updated T2K measurements of muon neutrino and antineutrino disappearance using 1.5 x 10(21) protons on target
SO Physical Review D
JI Phys. Rev. D
PY 2017
BP 011102
EP 9pp
VL 96
IS 1
DI 10.1103/PhysRevD.96.011102
LA English
AB We report measurements by the T2K experiment of the parameters theta(23) and Delta m(32)(2) governing the disappearance of muon neutrinos and antineutrinos in the three-flavor neutrino oscillation model. Utilizing the ability of the experiment to run with either a mainly neutrino or a mainly antineutrino beam, the parameters are measured separately for neutrinos and antineutrinos. Using 7.482 x 10(20) POT in neutrino running mode and 7.471 x 10(20) POT in antineutrino mode, T2K obtained sin(2) (theta(23)) = 0.51(-0.07)(+0.08) and Delta (m) over bar (2)(32) = (+0.15)(-2.53) -0.13 x 10(-3) eV(2)/c(4) for neutrinos, and sin(2) ((theta) over bar (23)) = 0.42(-0.07)(+0.25) and Delta(m) over bar (2)(32) = 2.55(-0.27)(+0.33) x 10(-3) eV(2)/c(4) for antineutrinos (assuming normal mass ordering). No significant differences between the values of the parameters describing the disappearance of muon neutrinos and antineutrinos were observed.
ER