利用完整 OPERA 数据测量 TeV 大气μ子电荷比
高能物理 - 实验
2015-06-18 v1
摘要
OPERA 探测器旨在搜寻 CNGS 束流中的 振荡，位于地下 Gran Sasso 实验室，是研究 TeV 尺度宇宙射线的理想地点。对于此处呈现的分析，该探测器被用于测量 TeV 区域的大气μ子电荷比。OPERA 在 2008 年至 2012 年间收集了电荷分离的宇宙射线数据。探测并重建了超过 300 万个大气μ子事件，其中包含约 110000 个多重μ子束。电荷比 分别针对单μ子事件和多重μ子事件进行了测量。该分析利用了 2012 年运行期间特意执行的磁极反转。结合具有相反磁极的两个数据集，使得系统不确定性最小化，并实现了μ子电荷比的精确测定。对数据进行拟合以获得关于原初宇宙射线组成及其在前向碎裂区相关 kaon 产生的相关参数。在 OPERA 研究的 1-20 TeV 表面能量范围内， 能很好地由仅包含π介子和 kaon 对μ子通量贡献的参数模型描述，未显示出瞬时成分的显著贡献。能量无关性支持了 Feynman 标度在高达 TeV/核子原初能量的碎裂区内的有效性。
引用
@article{arxiv.1403.0244,
title = {Measurement of TeV atmospheric muon charge ratio with the full OPERA data},
author = {N. Agafonova and A. Anokhina and S. Aoki and A. Ariga and T. Ariga and D. Bender and A. Bertolin and C. Bozza and R. Brugnera and A. Buonaura and S. Buontempo and B. Buettner and M. Chernyavsky and A. Chukanov and L. Consiglio and N. D'Ambrosio and G. De Lellis and M. De Serio and P. Del Amo Sanchez and A. Di Crescenzo and D. Di Ferdinando and N. Di Marco and S. Dmitrievski and M. Dracos and D. Duchesneau and S. Dusini and T. Dzhatdoev and J. Ebert and A. Ereditato and R. A. Fini and T. Fukuda and G. Galati and A. Garfagnini and G. Giacomelli and C. Goellnitz and J. Goldberg and Y. Gornushkin and G. Grella and M. Guler and C. Gustavino and C. Hagner and T. Hara and A. Hollnagel and B. Hosseini and H. Ishida and K. Ishiguro and K. Jakovcic and C. Jollet and C. Kamiscioglu and M. Kamiscioglu and J. Kawada and J. H. Kim and S. H. Kim and N. Kitagawa and B. Klicek and K. Kodama and M. Komatsu and U. Kose and I. Kreslo and A. Lauria and J. Lenkeit and A. Ljubicic and A. Longhin and P. Loverre and A. Malgin and M. Malenica and G. Mandrioli and T. Matsuo and V. Matveev and N. Mauri and E. Medinaceli and A. Meregaglia and S. Mikado and P. Monacelli and M. C. Montesi and K. Morishima and M. T. Muciaccia and N. Naganawa and T. Naka and M. Nakamura and T. Nakano and Y. Nakatsuka and K. Niwa and S. Ogawa and N. Okateva and A. Olshevsky and T. Omura and K. Ozaki and A. Paoloni and B. D. Park and I. G. Park and L. Pasqualini and A. Pastore and L. Patrizii and H. Pessard and C. Pistillo and D. Podgrudkov and N. Polukhina and M. Pozzato and F. Pupilli and M. Roda and H. Rokujo and T. Roganova and G. Rosa and O. Ryazhskaya and O. Sato and A. Schembri and I. Shakiryanova and T. Shchedrina and A. Sheshukov and H. Shibuya and T. Shiraishi and G. Shoziyoev and S. Simone and M. Sioli and C. Sirignano and G. Sirri and M. Spinetti and L. Stanco and N. Starkov and S. M. Stellacci and M. Stipcevic and P. Strolin and S. Takahashi and M. Tenti and F. Terranova and V. Tioukov and S. Tufanli and P. Vilain and M. Vladimirov and L. Votano and J. L. Vuilleumier and G. Wilquet and B. Wonsak and C. S. Yoon and S. Zemskova and A. Zghiche},
journal= {arXiv preprint arXiv:1403.0244},
year = {2015}
}
备注
8 pages, 2 figures, 4 tables