Measurement of the Spectral Function of $^{40}$Ar through the $(e,e^\prime p)$ reaction
A. Ankowski, R. Beminiwattha, O. Benhar, D. G. Crabb, D. B. Day, F. Garibaldi, G. Garvey, D. Gaskell, C. Giusti, O. Hansen, D. W. Higinbotham, R. Holmes, C. M. … 展开作者
A. Ankowski, R. Beminiwattha, O. Benhar, D. G. Crabb, D. B. Day, F. Garibaldi, G. Garvey, D. Gaskell, C. Giusti, O. Hansen, D. W. Higinbotham, R. Holmes, C. M. Jen, X. Jiang, D. Keller, C. E. Keppel, R. Lindgren, J. M. Link, N. Liyanage, C. Mariani, A. Meucci, G. B. Mills, L. Myers, M. L. Pitt, O. A. Rondon, M. Sakuda, B. Sawatzky, P. A. Souder, G. M. Urciuoli, S. Wood, J. Zhang
备注：
28 pages, 4 figures, Proposal PR12-14-012 submitted to the JLAB PAC 42, July 2014
The interpretation of the signals detected by high precision experiments aimed at measuring neutrino oscillations requires an accurate description of the neutrino-nucleus cross sections. One of the key element of the analysis is the treatment of nuclear effects, which is one of the main sources of systematics for accelerator based experiments such as the Long Baseline Neutrino Experiment (LBNE). A considerable effort is currently being made to develop theoretical models capable of providing a fully quantitative description of the neutrino-nucleus cross sections in the kinematical regime relevant to LBNE. The approach based on nuclear many-body theory and the spectral function formalism has proved very successful in explaining the available electron scattering data in a variety of kinematical conditions. The first step towards its application to the analysis of neutrino data is the derivation of the spectral functions of nuclei employed in neutrino detectors, in particular argon. We propose a measurement of the coincidence $(e,e^\prime p)$ cross section on argon. This data will provide the experimental input indispensable to construct the argon spectral function, thus paving the way for a reliable estimate of the neutrino cross sections. In addition, the analysis of the $(e,e^\prime p)$ data will help a number of theoretical developments, like the description of final-state interactions needed to isolate the initial-state contributions to the observed single-particle peaks, that is also needed for the interpretation of the signal detected in neutrino experiments.
Cross sections for neutron-induced reactions from surrogate data: revisiting the Weisskopf-Ewing approximation for $(n,n^{\prime})$ and $(n,2n)$ reactions
Feasibility of the observation of $η^{\prime}$ mesic nuclei in the semi-exclusive $^{12}$C($p, dp$) reaction
Tottori University（鸟取大学）；Graduate School of Maritime Sciences, Kobe University（神户大学海事科学研究生院）；Department of Physics, Nara Women’s University（奈良女子大学物理系）；Department of Physics, School of Science, Institute of Science Tokyo（东京科学大学理学院物理系）；RIKEN Nishina Center for Accelerator-Based Science, RIKEN（RIKEN西村加速器科学中心）；RIKEN Cluster for Pioneering Research, RIKEN（RIKEN先锋研究集群）；Department of Physics, The University of Osaka（大阪大学物理系）；Department of Physics, Kyoto University（京都大学物理系）；Department of Physics, Kyoto Sangyo University（京都产业大学物理系）；Universität Giessen（吉森大学）
Differential cross sections for the reactions gamma p-> p eta and gamma p -> p eta-prime
高统计微分截面的反应γ p -> p eta和γ p -> p eta-素数已被测量使用CLAS在杰斐逊实验室的质心能量从近阈值高达2.84 GeV。eta-prime的结果是迄今为止最精确的，并提供了最大的能量和角度覆盖范围。eta测量将世界上大角度结果的能量范围扩展了约300 MeV。这些新的数据，特别是η素数的测量，可能有助于限制正在进行的分析，以寻找新的重子共振态。
Constraining Neutron Capture Cross Sections for $^{88}\mathrm{Y}$ with Gamma-ray Strength Function in $(p,p^\primeγ)$ Surrogate Reaction
University of South China（南华大学）；Key Laboratory of Advanced Nuclear Energy Design and Safety, Ministry of Education（教育部先进核能安全与设计重点实验室）；Beihang University（北京航空航天大学）；China Institute of Atomic Energy（中国原子能科学研究院）
Study of the neutrino-oxygen cross sections of the charged-current reaction 16O($\barν_e,e^+$)16N(0 MeV,$2^-$) and the neutral-current reaction 16O($ν,ν$')16O(12.97/12.53 MeV,$2^-$), producing high-energy gamma rays
Transverse Spin Structure of the Nucleon through Target Single Spin Asymmetry in Semi-Inclusive Deep-Inelastic $(e,e^\prime π^\pm)$ Reaction at Jefferson Lab
杰斐逊实验室（JLab）12 GeV的能量升级提供了一个黄金机会，可以对质子和中子在价夸克区域的横向自旋和横向动量相关结构进行精确研究。在本文中，我们重点讨论了最近批准的中子实验，作为JLab计划的精度研究的一个例子。新实验将使用11和8.8 GeV电子束，在深度非弹性散射运动学中，从40 cm长的横向极化$^3$ He靶半包容性电产生带电π介子，对靶单自旋不对称性（SSA）进行精确测量。这个新的符合实验在大厅A将采用一个新提出的螺线管光谱仪（SoLID）。大接收谱仪和高偏振光度将通过方位角依赖性提供关于中子的Collins、Sivers和Pretzelocity不对称性的精确四维（$x$、$z$、$P_T$和$Q^2$）数据。实验室中2 $π$全方位角覆盖对于控制系统不确定性至关重要。从这个实验的结果，当结合质子柯林斯不对称性测量和柯林斯碎裂功能确定的e $^+$ e $^-$碰撞数据，将允许夸克味分离，以实现10%的准确度确定张量电荷的d夸克。提取的Sivers和pretzelocity不对称性将为理解夸克轨道角动量和核子自旋之间以及夸克自旋和核子自旋之间的相关性提供重要信息。
