Measurement of neutrino and antineutrino neutral-current quasielasticlike interactions on oxygen by detecting nuclear deexcitation gamma rays

Abe, K. and Akutsu, R. and Alt, C. and Andreopoulos, C. and Antonova, M. and Aoki, S. and Ariga, A. and Ashida, Y. and Atkin, E. T. and Awataguchi, Y. and Ban, S. and Barbi, M. and Barker, G. J. and Barr, G. and Barry, C. and Batkiewicz-Kwasniak, M. and Beloshapkin, A. and Bench, F. and Berardi, V. and Berkman, S. and Berns, L. and Bhadra, S. and Bienstock, S. and Blondel, A. and Bolognesi, S. and Bourguille, B. and Brailsford, D. and Bravar, A. and Berguño, D. Bravo and Bronner, C. and Bubak, A. and Avanzini, M. Buizza and Calcutt, J. and Campbell, T. and Cao, S. and Catanesi, M. G. and Cervera, A. and Chappell, A. and Checchia, C. and Cherdack, D. and Chikuma, N. and Dealtry, T. and Finch, A. J. and Knox, A. and Kormos, L. L. and Lawe, M. and Nowak, J. and O'Keeffe, H. M. and Ratoff, P. N. and Walsh, J. G. (2019) Measurement of neutrino and antineutrino neutral-current quasielasticlike interactions on oxygen by detecting nuclear deexcitation gamma rays. Physical Review D, 100 (12). ISSN 1550-7998

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Abstract

Neutrino- and antineutrino-oxygen neutral-current quasielasticlike interactions are measured at Super-Kamiokande using nuclear deexcitation gamma rays to identify signal-like interactions in data from a 14.94(16.35) x 10(20) protons-on-target exposure of the T2K neutrino (antineutrino) beam. The measured flux-averaged cross sections on oxygen nuclei are = 1.70 +/- 0.17(stat.)(-0.38)(+0.51) (syst.) x 10(-38) cm(2)/oxygen with a flux-averaged energy of 0.82 GeV and = 0.98 +/- 0.16(stat.)(-0.19)(+0.26)(syst.) x 10(-38)cm(2)/oxygen with a flux-averaged energy of 0.68 GeV, for neutrinos and antineutrinos, respectively. These results are the most precise to date, and the antineutrino result is the first cross section measurement of this channel. They are compared with various theoretical predictions. The impact on evaluation of backgrounds to searches for supernova relic neutrinos at present and future water Cherenkov detectors is also discussed.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D
Subjects:
ID Code:
139476
Deposited By:
Deposited On:
09 Dec 2019 15:55
Refereed?:
Yes
Published?:
Published
Last Modified:
28 May 2020 08:00