Neutrino-induced coherent $\pi^{+}$ production in C, CH, Fe and Pb at $\langle E_{\nu}\rangle \sim 6$ GeV

• Main Authors: Ramírez, M. A, Akhter, S, Dar, Z. Ahmad, Akbar, F, Ansari, V, Ascencio, M. V, Athar, M. Sajjad, Bashyal, A, Bellantoni, L, Bercellie, A, Betancourt, M, Bodek, A, Bonilla, J. L, Bravar, A, Budd, H, Caceres, G, Cai, T, Díaz, G. A, da Motta, H, Dytman, S. A, Felix, J, Fields, L, Filkins, A, Fine, R, Gallagher, H, Ghosh, A, Gilligan, S. M, Gran, R, Granados, E, Harris, D. A, Henry, S, Jena, D, Jena, S, Kleykamp, J, Klustová, A, Kordosky, M, Last, D, Lozano, A, Lu, X. -G, Maher, E, Manly, S, Mann, W. A, Mauger, C, McFarland, K. S, Messerly, B, Miller, J, Moreno, O, Morfín, J. G, Naples, D, Nelson, J. K, Nguyen, C, Olivier, A, Paolone, V, Perdue, G. N, Plows, K. -J, Ransome, R. D, Ruterbories, D, Schellman, H, Su, H, Sultana, M, Syrotenko, V. S, Valencia, E, Vaughan, N. H, Waldron, A. V, Yaeggy, B, Zazueta, L
• Format: Journal Article
• Language: English
• Published: 03-10-2022
• Subjects: Physics - High Energy Physics - Experiment
• DOI: 10.48550/arxiv.2210.01285

MINERvA has measured the $\nu_{\mu}$-induced coherent $\pi^{+}$ cross section
simultaneously in hydrocarbon (CH), graphite (C), iron (Fe) and lead (Pb)
targets using neutrinos from 2 to 20 GeV. The measurements exceed the
predictions of the Rein-Sehgal and Berger-Sehgal PCAC based models at multi-GeV
$\nu_{\mu}$ energies and at produced $\pi^{+}$ energies and angles, $E_{\pi}>1$
GeV and $\theta_{\pi}<10^{\circ}$. Measurements of the cross-section ratios of
Fe and Pb relative to CH reveal the effective $A$-scaling to increase from an
approximate $A^{1/3}$ scaling at few GeV to an $A^{2/3}$ scaling for
$E_{\nu}>10$ GeV.