Measurement of Coherent Production of π± in Neutrino and Anti-Neutrino Beams on Carbon from Eν of 1.5 to 20 GeV
Higuera, A. · Mislivec, A. · Aliaga, L. · Altinok, O. · Bercellie, A. · Betancourt, M. · Bodek, A. · Bravar, A. · Brooks, W. K. · Budd, H. · Butkevich, A. · Carneiro, M. F. · Castromonte, C. M. · Christy, M. E. · Chvojka, J. · da Motta, H. · Devan, J. · Dytman, S. A. · Díaz, G. A. · Eberly, B. · Felix, J. · Fields, L. · Fine, R. · Fiorentini, G. A. · Gallagher, H. · Gomez, A. · Gran, R. · Harris, D. A. · Hurtado, K. · Kleykamp, J. · Kordosky, M. · Le, T. · Maher, E. · Manly, S. · Mann, W. A. · Marshall, C. M. · Caicedo, D. A. Martinez · McFarland, K. S. · McGivern, C. L. · McGowan, A. M. · Messerly, B. · Miller, J. · Morfín, J. G. · Mousseau, J. · Muhlbeier, T. · Naples, D. · Nelson, J. K. · Norrick, A. · Osta, J. · Palomino, J. L. · Paolone, V. · Park, J. · Patrick, C. E. · Perdue, G. N. · Ransome, R. D. · Ray, H. · Ren, L. · Rodrigues, P. A. · Ruterbories, D. · Schellman, H. · Schmitz, D. W. · Snider, F. D. · Salinas, C. J. Solano · Tagg, N. · Tice, B. G. · Valencia, E. · Walton, T. · Wolcott, J. · Wospakrik, M. · Zavala, G. · Zhang, D. · Ziemer, B. P.
Original · EN
Neutrino-induced coherent charged pion production on nuclei, (-)νμA→μ±π∓ A is a rare, inelastic interaction in which a small squared four-momentum | t| is transferred to the recoil nucleus leaving it intact in the reaction. In the scintillator tracker of MINERvA, we remove events with evidence of particles from nuclear breakup and reconstruct | t| from the final state pion and muon. We select low | t| events to isolate a sample rich in coherent candidates. By selecting low | t| events we produce a model-independent measurement of the differential cross section for coherent scattering of neutrinos and anti-neutrinos on carbon. We find poor agreement with the predicted kinematics in neutrino generators used by current oscillation experiments.
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