首次观测到 $E_{\nu}<$ 2 GeV 的中微子 - 核相互作用中的相干 $\pi^0$ 产生
高能物理 - 实验
2008-11-26 v1
摘要
费米实验室的 MiniBooNE 实验迄今为止积累了最大规模的低能中性流 (NC) 中微子 - 核相互作用中产生的 样本。本文报告了对矿物油 (CH) 中产生的 动量分布的测量，以及首次观测到低于 2 GeV 的相干 产生。在前向方向上，观测到的超出共振产生预期的事件产额主要归因于碳上的相干产生，但也可能包含氢上衍射产生的微小贡献。在对 MiniBooNE 中微子通量进行积分后，发现 NC 相干模式和衍射模式的总和占 MiniBooNE 所有独占 NC 产生的 (19.5 1.1 (统计) 2.5 (系统))%。这些测量具有直接的实用价值，因为它们量化了 MiniBooNE 搜索 振荡的一个重要背景。
引用
@article{arxiv.0803.3423,
title = {First Observation of Coherent $\pi^0$ Production in Neutrino Nucleus Interactions with $E_{\nu}<$ 2 GeV},
author = {The MiniBooNE Collaboration and A. A. Aguilar-Arevalo and C. E. Anderson and A. O. Bazarko and S. J. Brice and B. C. Brown and L. Bugel and J. Cao and L. Coney and J. M. Conrad and D. C. Cox and A. Curioni and Z. Djurcic and D. A. Finley and B. T. Fleming and R. Ford and F. G. Garcia and G. T. Garvey and C. Green and J. A. Green and T. L. Hart and E. Hawker and R. Imlay and R. A. Johnson and G. Karagiori and P. Kasper and T. Katori and T. Kobilarcik and I. Kourbanis and S. Koutsoliotas and E. M. Laird and S. K. Linden and J. M. Link and Y. Liu and Y. Liu and W. C. Louis and K. B. M. Mahn and W. Marsh and P. S. Martin and G. McGregor and W. Metcalf and P. D. Meyers and F. Mills and G. B. Mills and J. Monroe and C. D. Moore and R. H. Nelson and V. T. Nguyen and P. Nienaber and J. A. Nowak and S. Ouedraogo and R. B. Patterson and D. Perevalov and C. C. Polly and E. Prebys and J. L. Raaf and H. Ray and B. P. Roe and A. D. Russell and V. Sandberg and R. Schirato and D. Schmitz and M. H. Shaevitz and F. C. Shoemaker and D. Smith and M. Soderberg and M. Sorel and P. Spentzouris and I. Stancu and R. J. Stefanski and M. Sung and H. A. Tanaka and R. Tayloe and M. Tzanov and R. Van de Water and M. O. Wascko and D. H. White and M. J. Wilking and H. J. Yang and G. P. Zeller and E. D. Zimmerman},
journal= {arXiv preprint arXiv:0803.3423},
year = {2008}
}
备注
Submitted to Phys. Lett. B