Recent results from T2K

Coleman, S. (2013) Recent results from T2K. Il nuovo cimento C, 36 (6). pp. 45-52. ISSN 1826-9885

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The T2K long baseline neutrino experiment uses a muon neutrino beam to measure the θ13 and θ23 neutrino oscillation mixing angles, as well as the neutrino mass state splitting Δm2 32. The J-PARC facility has delivered 3.01 × 1020 protons to the T2K beamline as of July 2012. The experiment has observed muon neutrino disappearance and electron neutrino appearance consistent with neutrino oscillations. With νe appearance, T2K measures sin2(2θ13) = 0.088+0.049−0.039 (0.108+0.059−0.046) for δCP = 0 and the normal (inverted) hierarchy. With νμ disappearance, the T2K preliminary measurement finds Δm2 32 = 2.45 × 10−3 eV2/c4 and θ23 consistent with maximal mixing at 90% C.L. These θ13 results are consistent with recent reactor experiments, and the θ23 is consistent with other accelerator-based disappearance experiments. T2K is currently taking data, and will improve these limits in the future.

Item Type: Article
Uncontrolled Keywords: Neutrino mass and mixing ; Neutrino interactions
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 07 May 2020 15:38
Last Modified: 07 May 2020 15:38

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