Simultaneous Measurement of Muon Neutrino νμ Charged-Current Single π+ Production in CH, C,
A. Bercellie, K. A. Kroma-Wiley, S. Akhter,Z. Ahmad Dar, F. Akbar, V. Ansari, M. V. Ascencio,M. Sajjad Athar, L. Bellantoni, M. Betancourt, A. Bodek, J. L. Bonilla, A. Bravar, H. S. Budd, G. Cáceres, T. Cai,G. A. Díaz,H. da Motta, S. A. Dytman, J. Félix, L. Fields, A. Filkins, R. Fine, A. M. Gago,H. Gallagher, P. K. Gaur, A. Ghosh, S. M. Gilligan, R. Gran, E. Granados, D. A. Harris, D. Jena, S. Jena, J. Kleykamp,A. Klustová, M. Kordosky, D. Last, T. Le, A. Lozano, X.-G. Lu, I. Mahbub, E. Maher, S. Manly, W. A. Mann, C. Mauger, K. S. McFarland, B. Messerly,J. Miller, O. Moreno, J. G. Morfín, D. Naples, J. K. Nelson, C. N. Nguyen, A. Olivier, V. Paolone, G. N. Perdue, K.-J. Plows, M. A. Ramírez, R. D. Ransome, H. Ray, D. Ruterbories, H. Schellman,C. J. Solano Salinas, Hang Su, M. Sultana, V. S. Syrotenko, B. Utt, E. Valencia, N. H. Vaughan, A. V. Waldron, B. Yaeggy, L. Zazueta

Physical Review Letters（2023）

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摘要

Neutrino-induced charged-current single $\pi^+$ production in the $\Delta(1232)$ resonance region is of considerable interest to accelerator-based neutrino oscillation experiments. In this work, high statistics differential cross sections are reported for the semi-exclusive reaction $\nu_\mu A \to \mu^- \pi^+ +$ nucleon(s) on scintillator, carbon, water, iron, and lead targets recorded by MINERvA using a wide-band $\nu_\mu$ beam with $\left< E_\nu \right> \approx 6$~GeV. Suppression of the cross section at low $Q^2$ and enhancement of low $T_\pi$ are observed in both light and heavy nuclear targets compared to phenomenological models used in current neutrino interaction generators. The cross-section ratios for iron and lead compared to CH across the kinematic variables probed are 0.8 and 0.5 respectively, a scaling which is also not predicted by current generators.

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muon neutrino,measurement,xmlnsmml=http//wwww3org/1998/math/mathml,charged-current

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