TY  - JOUR
AU  - T2K Collaboration (Abe, K. et al
AU  - Antonova, M.
AU  - Cervera-Villanueva, A.
AU  - Molina Bueno, L.
AU  - Novella, P.
PY  - 2023
DA  - 2023//
TI  - Updated T2K measurements of muon neutrino and antineutrino disappearance using 3.6 x 10^21 protons on target
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 072011
EP  - 10pp
VL  - 108
IS  - 7
PB  - Amer Physical Soc
AB  - Muon neutrino and antineutrino disappearance probabilities are identical in the standard three-flavor neutrino oscillation framework, but CPT violation and nonstandard interactions can violate this symmetry. In this work we report the measurements of sin2 theta 23 and Delta m232 independently for neutrinos and antineutrinos. The aforementioned symmetry violation would manifest as an inconsistency in the neutrino and antineutrino oscillation parameters. The analysis discussed here uses a total of 1.97 x 1021 and 1.63 x 1021 protons on target taken with a neutrino and antineutrino beam respectively, and benefits from improved flux and cross section models, new near-detector samples and more than double the data reducing the overall uncertainty of the result. No significant deviation is observed, consistent with the standard neutrino oscillation picture.
SN  - 2470-0010
UR  - https://arxiv.org/abs/2305.09916
UR  - https://doi.org/10.1103/PhysRevD.108.072011
DO  - 10.1103/PhysRevD.108.072011
LA  - English
N1  - WOS:001102916000001
ID  - T2KCollaborationAbe_etal2023
ER  -