Measurement of neutron production in atmospheric neutrino interactions at the Sudbury Neutrino Observatory. / SNO Collaboration.
In: Physical Review D , Vol. 99, No. 11, 112007, 18.06.2019, p. 1-19.Research output: Contribution to journal › Article › peer-review
Measurement of neutron production in atmospheric neutrino interactions at the Sudbury Neutrino Observatory. / SNO Collaboration.
In: Physical Review D , Vol. 99, No. 11, 112007, 18.06.2019, p. 1-19.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Measurement of neutron production in atmospheric neutrino interactions at the Sudbury Neutrino Observatory
AU - SNO Collaboration
AU - Aharmim, B.
AU - Ahmed, S. N.
AU - Anthony, A. E.
AU - Barros, N.
AU - Beier, E. W.
AU - Bellerive, A.
AU - Beltran, B.
AU - Bergevin, M.
AU - Biller, S. D.
AU - Bonventre, R.
AU - Boudjemline, K.
AU - Boulay, M. G.
AU - Cai, B.
AU - Callaghan, E. J.
AU - Caravaca, J.
AU - Chan, Y. D.
AU - Chauhan, D.
AU - Chen, M.
AU - Cleveland, B. T.
AU - Cox, G. A.
AU - Dai, X.
AU - Deng, H.
AU - Descamps, F. B.
AU - Detwiler, J. A.
AU - Doe, P. J.
AU - Doucas, G.
AU - Drouin, P. -L.
AU - Dunford, M.
AU - Elliott, S. R.
AU - Evans, H. C.
AU - Ewan, G. T.
AU - Farine, J.
AU - Fergani, H.
AU - Fleurot, F.
AU - Ford, R. J.
AU - Formaggio, J. A.
AU - Gagnon, N.
AU - Gilje, K.
AU - Goon, J. TM.
AU - Graham, K.
AU - Guillian, E.
AU - Habib, S.
AU - Hahn, R. L.
AU - Hallin, A. L.
AU - Hallman, E. D.
AU - Howard, C.
AU - Huang, M.
AU - Law, J.
AU - Monroe, J.
PY - 2019/6/18
Y1 - 2019/6/18
N2 - Neutron production in GeV-scale neutrino interactions is a poorly studied process. We have measured the neutron multiplicities in atmospheric neutrino interactions in the Sudbury Neutrino Observatory experiment and compared them to the prediction of a Monte Carlo simulation using GENIE and a minimally modified version of GEANT4. We analyzed 837 days of exposure corresponding to Phase I, using pure heavy water, and Phase II, using a mixture of Cl in heavy water. Neutrons produced in atmospheric neutrino interactions were identified with an efficiency of $15.3\%$ and $44.3\%$, for Phase I and II respectively. The neutron production is measured as a function of the visible energy of the neutrino interaction and, for charged current quasi-elastic interaction candidates, also as a function of the neutrino energy. This study is also performed classifying the complete sample into two pairs of event categories: charged current quasi-elastic and non charged current quasi-elastic, and $\nu_{\mu}$ and $\nu_e$. Results show good overall agreement between data and Monte Carlo for both phases, with some small tension with a statistical significance below $2\sigma$ for some intermediate energies.
AB - Neutron production in GeV-scale neutrino interactions is a poorly studied process. We have measured the neutron multiplicities in atmospheric neutrino interactions in the Sudbury Neutrino Observatory experiment and compared them to the prediction of a Monte Carlo simulation using GENIE and a minimally modified version of GEANT4. We analyzed 837 days of exposure corresponding to Phase I, using pure heavy water, and Phase II, using a mixture of Cl in heavy water. Neutrons produced in atmospheric neutrino interactions were identified with an efficiency of $15.3\%$ and $44.3\%$, for Phase I and II respectively. The neutron production is measured as a function of the visible energy of the neutrino interaction and, for charged current quasi-elastic interaction candidates, also as a function of the neutrino energy. This study is also performed classifying the complete sample into two pairs of event categories: charged current quasi-elastic and non charged current quasi-elastic, and $\nu_{\mu}$ and $\nu_e$. Results show good overall agreement between data and Monte Carlo for both phases, with some small tension with a statistical significance below $2\sigma$ for some intermediate energies.
KW - hep-ex
U2 - 10.1103/PhysRevD.99.112007
DO - 10.1103/PhysRevD.99.112007
M3 - Article
VL - 99
SP - 1
EP - 19
JO - Physical Review D
JF - Physical Review D
SN - 1550-7998
IS - 11
M1 - 112007
ER -