Measurement of single π0 production by coherent neutral-current ν Fe interactions in the MINOS Near Detector

P. Adamson, I. Anghel, A. Aurisano, G. Barr, M. Bishai, A. Blake, G. J. Bock, D. Bogert, S. V. Cao, T. J. Carroll, C. M. Castromonte, R. Chen, D. Cherdack, S. Childress, J. A B Coelho, L. Corwin, D. Cronin-Hennessy, J. K. De Jong, S. De Rijck, A. V. DevanN. E. Devenish, M. V. Diwan, C. O. Escobar, J. J. Evans, E. Falk, G. J. Feldman, W. Flanagan, M. V. Frohne, M. Gabrielyan, H. R. Gallagher, S. Germani, R. A. Gomes, M. C. Goodman, P. Gouffon, N. Graf, R. Gran, K. Grzelak, A. Habig, S. R. Hahn, J. Hartnell, R. Hatcher, A. Holin, J. Huang, J. Hylen, G. M. Irwin, Z. Isvan, C. James, D. Jensen, M. L. Marshak, G. Pawloski, (MINOS Collaboration)

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Abstract

Forward single π0 production by coherent neutral-current interactions, νA→νAπ0, is investigated using a 2.8×1020 protons-on-target exposure of the MINOS Near Detector. For single-shower topologies, the event distribution in production angle exhibits a clear excess above the estimated background at very forward angles for visible energy in the range 1-8 GeV. Cross sections are obtained for the detector medium comprised of 80% iron and 20% carbon nuclei with =48, the highest- target used to date in the study of this coherent reaction. The total cross section for coherent neutral-current single π0 production initiated by the νμ flux of the NuMI low-energy beam with mean (mode) Eν of 4.9 GeV (3.0 GeV), is 77.6±5.0(stat)-16.8+15.0(syst)×10-40 cm2 pernucleus. The results are in good agreement with predictions of the Berger-Sehgal model.

Original languageEnglish (US)
Article number072006
JournalPhysical Review D
Volume94
Issue number7
DOIs
StatePublished - Oct 26 2016

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Adamson, P., Anghel, I., Aurisano, A., Barr, G., Bishai, M., Blake, A., Bock, G. J., Bogert, D., Cao, S. V., Carroll, T. J., Castromonte, C. M., Chen, R., Cherdack, D., Childress, S., Coelho, J. A. B., Corwin, L., Cronin-Hennessy, D., De Jong, J. K., De Rijck, S., ... (MINOS Collaboration) (2016). Measurement of single π0 production by coherent neutral-current ν Fe interactions in the MINOS Near Detector. Physical Review D, 94(7), [072006]. https://doi.org/10.1103/PhysRevD.94.072006