Measurement of Ratios of νμ Charged-Current Cross Sections on C, Fe, and Pb to CH at Neutrino Energies 2–20 GeV

作者：B. G. Tice, M. Datta, J. Mousseau, Leonidas Aliaga, O. Altinok, M. G. Barrios Sazo, M. Betancourt, A. Bodek, ALESSANDRO BRAVAR, W. K. Brooks, H. S. Budd, M. J. Bustamante-Rosell, A. Butkevich, D. A. Martínez Caicedo, C. Castromonte, M. ERIC CHRISTY, J. Chvojka, H. da Motta, J. Devan, S. A. Dytman, G. A. Díaz, B. Eberly, J. Félix, L. Fields, G. A. Fiorentini, A. M. Gago, Hugh R. Gallagher, Richard Gran, D. A. Harris, A. Higuera, K. Hurtado Anampa, M. Jerkins, T. Kafka, M. Kordosky, S. Kulagin, T. Le, G. Maggi, E. Maher, S. Manly, W. A. Mann, Chris M. Marshall, C. Martin Mari, Kevin S. McFarland, C. L. McGivern, A. M. McGowan, J. Miller, A. Mislivec, J. G. Morfín, T. Mühlbeier, D. Naples, J. K. Nelson, A. Norrick, John M. van Osta, J. L. Palomino, Vittorio Paolone, J. Park, Cheryl E. Patrick, G. N. Perdue, L. Rakotondravohitra, Ronald D. Ransome, H. Ray, L. Ren, P. A. Rodrigues, David G. Savage, Heidi Marie Schellman, David W. Schmitz, C. Simon, F. D. Snider, Carlos Javier Solano Salinas, N. Tagg, E. Valencia, J. P. Velásquez, T. Walton, J. Wolcott, G. Zavala, D. Zhang, Benjamin P. Ziemer · 发表于：Physical Review Letters · 年份：2014 · DOI：10.1103/physrevlett.112.231801 · 被引用次数：57 · 研究领域：Neutrino Physics Research、Particle physics theoretical and experimental studies、Astrophysics and Cosmic Phenomena

We present measurements of ν(μ) charged-current cross section ratios on carbon, iron, and lead relative to a scintillator (CH) using the fine-grained MINERvA detector exposed to the NuMI neutrino beam at Fermilab. The measurements utilize events of energies 2<E(ν)<20 GeV, with ⟨E(ν)⟩ = 8 GeV, which have a reconstructed μ(-) scattering angle less than 17° to extract ratios of inclusive total cross sections as a function of neutrino energy E(ν) and flux-integrated differential cross sections with respect to the Bjorken scaling variable x. These results provide the first high-statistics direct measurements of nuclear effects in neutrino scattering using different targets in the same neutrino beam. Measured cross section ratios exhibit a relative depletion at low x and enhancement at large x. Both become more pronounced as the nucleon number of the target nucleus increases. The data are not reproduced by GENIE, a conventional neutrino-nucleus scattering simulation, or by the alternative models for the nuclear dependence of inelastic scattering that are considered.