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Article
Report number arXiv:2004.13989
Title Measurements of ν¯μ and ν¯μ+νμ charged-current cross-sections without detected pions nor protons on water and hydrocarbon at mean antineutrino energy of 0.86 GeV
Author(s) T2K Collaboration  371 人のオーサーを表示
Publication 2021-04-19
Imprint 2020-04-29
Number of pages 29
In: PTEP 2021 (2021) 043C01
DOI 10.1093/ptep/ptab014 (publication)
Subject category hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment T2K
Abstract We report measurements of the flux-integrated ν¯μ and ν¯μ+νμ charged-current cross-sections on water and hydrocarbon targets using the T2K anti-neutrino beam, with a mean neutrino energy of 0.86 GeV. The signal is defined as the (anti-)neutrino charged-current interaction with one induced μ± and no detected charged pion nor proton. These measurements are performed using a new WAGASCI module recently added to the T2K setup in combination with the INGRID Proton module. The phase space of muons is restricted to the high-detection efficiency region, pμ>400MeV/c and θμ<30, in the laboratory frame. Absence of pions and protons in the detectable phase space of "pπ>200MeV/c and θπ<70", and "pp>600MeV/c and θp<70" is required. In this paper, both of the ν¯μ cross-sections and ν¯μ+νμ cross-sections on water and hydrocarbon targets, and their ratios are provided by using D'Agostini unfolding method. The results of the integrated ν¯μ cross-section measurements over this phase space are σH2O=(1.082±0.068(stat.)0.128+0.145(syst.))×1039cm2/nucleon, σCH=(1.096±0.054(stat.)0.117+0.132(syst.))×1039cm2/nucleon, and σH2O/σCH=0.987±0.078(stat.)0.090+0.093(syst.). The ν¯μ+νμ cross-section is σH2O=(1.155±0.064(stat.)0.129+0.148(syst.))×1039cm2/nucleon, σCH=(1.159±0.049(stat.)0.115+0.129(syst.))×1039cm2/nucleon, and σH2O/σCH=0.996±0.069(stat.)0.078+0.083(syst.).
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
publication: © 2021-2024 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³



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 レコード 生成: 2020-05-05, 最終変更: 2024-12-21


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