利用 MINOS 近探测器中的带电流 nu_mu-铁相互作用研究准弹性散射
高能物理 - 实验
2015-01-14 v3
摘要
将使用 MINOS 近探测器在峰值通量为 3 GeV 的宽波段束流下获得的 1.41 x 10^6 个铁上带电流 nu_mu 相互作用的包容性样本的运动学分布，与费米气体核内中微子散射的传统处理方法进行了比较。结果用于指导选择一个富含准弹性 nu_mu Fe 相互作用的子样本，其中包含估计 123,000 个入射能量 1 < E_nu < 8 GeV 的准弹性事件，<E_nu> = 2.79 GeV。另外还选择了四个代表准弹性散射拓扑和运动学侧带区域的子样本，用于评估背景。使用四动量转移 Q^2 中的子样本分布进行比较，显示蒙特卡洛模型在低 Q^2 下不足。其缺陷通过包含从数据开发的用于重子共振产生的 Q^2 依赖抑制函数得到补救。对所得蒙特卡洛模拟与准弹性富集样本的 Q^2 分布形状进行了卡方拟合，其中中子偶极轴矢量形状因子的轴矢量质量 M_A 作为自由参数。最能描述数据的有效 M_A 为 1.23 +0.13/-0.09 (拟合) +0.12/-0.15 (系统) GeV。
引用
@article{arxiv.1410.8613,
title = {Study of quasielastic scattering using charged-current nu_mu-iron interactions in the MINOS Near Detector},
author = {P. Adamson and I. Anghel and A. Aurisano and G. Barr and M. Bishai and A. Blake and G. J. Bock and D. Bogert and S. V. Cao and C. M. Castromonte and S. Childress and J. A. B. Coelho and L. Corwin and D. Cronin-Hennessy and J. K. de Jong and A. V. Devan and N. E. Devenish and M. V. Diwan and C. O. Escobar and J. J. Evans and E. Falk and G. J. Feldman and M. V. Frohne and H. R. Gallagher and R. A. Gomes and M. C. Goodman and P. Gouffon and N. Graf and R. Gran and K. Grzelak and A. Habig and S. R. Hahn and J. Hartnell and R. Hatcher and A. Holin and J. Huang and J. Hylen and G. M. Irwin and Z. Isvan and C. James and D. Jensen and T. Kafka and S. M. S. Kasahara and G. Koizumi and M. Kordosky and A. Kreymer and K. Lang and J. Ling and P. J. Litchfield and P. Lucas and W. A. Mann and M. L. Marshak and N. Mayer and C. McGivern and M. M. Medeiros and R. Mehdiyev and J. R. Meier and M. D. Messier and W. H. Miller and S. R. Mishra and S. Moed Sher and C. D. Moore and L. Mualem and J. Musser and D. Naples and J. K. Nelson and H. B. Newman and R. J. Nichol and J. A. Nowak and J. O Connor and M. Orchanian and R. B. Pahlka and J. Paley and R. B. Patterson and G. Pawloski and A. Perch and M. Pfutzner and S. Phan-Budd and R. K. Plunkett and N. Poonthottathil and X. Qiu and A. Radovic and B. Rebel and C. Rosenfeld and H. A. Rubin and M. C. Sanchez and J. Schneps and A. Schreckenberger and P. Schreiner and R. Sharma and A. Sousa and N. Tagg and R. L. Talaga and J. Thomas and M. A. Thomson and X. Tian and A. Timmons and S. C. Tognini and R. Toner and D. Torretta and J. Urheim and P. Vahle and B. Viren and J. J. Walding and A. Weber and R. C. Webb and C. White and L. Whitehead and L. H. Whitehead and S. G. Wojcicki and R. Zwaska},
journal= {arXiv preprint arXiv:1410.8613},
year = {2015}
}
备注
20 pages, 13 figures, 3 Tables Accepted for publication in PRD