低三动量转移下中微子-碳相互作用中核效应的鉴别
高能物理 - 实验
2019-09-24 v4
摘要
利用来自 MINERvA 中微子实验的低三动量转移中微子-碳散射数据子样本，我们分离出了两种不同的核介质效应。将带电流 相互作用中观测到的强子能量与缪子运动学信息相结合，实现了准弹性与 (1232) 共振过程的分离。首先，我们在极低能量转移处观测到了小截面，这与长程核子关联的预期屏蔽效应相符。其次，为了描述数据，需要在准弹性与 共振过程之间的运动学区域增加事件率。该运动学区域内的数据也表现出多质子末态的增强分布。对核子对散射所预测的贡献同时具备上述两个性质；尽管本分析中所测试的模型有显著改进，但仍未能完全描述数据。我们将结果表示为双微分截面，以便对核模型开展进一步研究。当前和未来的中微子振荡实验均需要对核环境效应有更完善的描述。
引用
@article{arxiv.1511.05944,
title = {Identification of nuclear effects in neutrino-carbon interactions at low three-momentum transfer},
author = {P. A. Rodrigues and J. Demgen and E. Miltenberger and L. Aliaga and O. Altinok and L. Bellantoni and A. Bercellie and M. Betancourt and A. Bodek and A. Bravar and H. Budd and T. Kai and M. F. Carneiro and J. Chvojka and J. Devan and S. A. Dytman and G. A. Diaz and B. Eberly and M. Elkins and J. Felix and L. Fields and R. Fine and A. M. Gago and R. Galindo and H. Gallagher and A. Ghosh and T. Golan and R. Gran and D. A. Harris and A. Higuera and K. Hurtado and M. Kiveni and J. Kleykamp and M. Kordosky and T. Le and J. R. Leistico and A. Lovlein and E. Maher and S. Manly and W. A. Mann and C. M. Marshall and D. A. Martinez Caicedo and K. S. McFarland and C. L. McGivern and A. M. McGowan and B. Messerly and J. Miller and A. Mislivec and J. Morfin and J. Mousseau and T. Muhlbeier and D. Naples and J. K. Nelson and A. Norrick and Nuruzzaman and J. Osta and V. Paolone and C. E. Patrick and G. N. Perdue and M. A. Ramirez and R. D. Ransome and H. Ray and L. Ren and D. Rimal and D. Ruterbories and H. Schellman and D. W. Schmitz and C. J. Solano Salinas and N. Tagg and B. G. Tice and E. Valencia and T. Walton and J. Wolcott and M. Wospakrik and G. Zavala and D. Zhang},
journal= {arXiv preprint arXiv:1511.05944},
year = {2019}
}
备注
7 pages, 3 figures, supplemental material. v2 includes updates from the review process. v3 includes ancillary files. v4 fixes incorrect exponent in Fig. 2 and supplemental files, synchronized with the erratum in the journal version