Publications associated with T2K

First measurement of the charged current (nu)over-bar(mu) double differential cross section on a water target without pions in the final state

Physical Review Letters American Physical Society 102 (2020) 12007

A Ali, C Alt, L Anthony, S Aoki, A Ariga, Y Ashida, E Atkin, Y Awataguchi, S Ban, M Barbi, G Barker, G Barr, C Barry, M Batkiewicz-Kwasniak, A Beloshapkin, F Bench, V Berardi, S Berkman, S Bhadra, S Bienstock, S Bolognesi, B Bourguille, D Brailsford, MB Avanzini, S Cartwright

This paper reports the first differential measurement of the charged-current &#957<sub>μ</sub> interaction cross section on water with no pions in the final state. The unfolded flux-averaged measurement using the T2K off-axis near detector is given in double-differential bins of μ+ momentum and angle. The integrated cross section in a restricted phase space is σ =(1.11 ± 0.18)×10<sup>−38</sup> cm<sup>2</sup> per water molecule. Comparisons with several nuclear models are also presented.

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