发表机构
University of South Carolina; Thomas Jefferson National Accelerator Facility; Christopher Newport University; Université Paris-Saclay; CNRS/IN2P3, IJCLab; Old Dominion University; INFN, Sezione di Ferrara; Duquesne University; Universit‘a degli Studi di Brescia; INFN, Sezione di Pavia; Fairfield University; Rensselaer Polytechnic Institute（南卡罗来纳大学; 托马斯·杰斐逊国家加速器设施; 克里斯托弗·纽波特大学; 巴黎萨克雷大学; 法国国家科学研究中心/欧洲核子研究组织，IJCLab; 老道明大学; 意大利国家核物理研究所，费拉拉分部; 杜肯大学; 布雷西亚大学; 意大利国家核物理研究所，帕维亚分部; 费尔菲尔德大学; 伦斯勒理工学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究利用CLAS探测器，在特定\(Q^{2}\)和\(W\)范围内测量\(γ_v p \to π^+ π^- p'\)截面，首次展示相关可观测量，改进非极化截面提取，对提取\(\gamma_v p N^*\)电耦合意义重大。
AI 中文摘要
首次展示了质子上\(\pi^+\pi^-p\)反应通道电产生中对虚光子极化敏感的可观测量，同时给出了在2.0 GeV\(^2 < Q^2 < 5.0\) GeV\(^2\)和1.400 GeV \(< W < 2.125\) GeV运动学区域内，用杰斐逊实验室B厅的CLAS探测器测量的九个单微分和完全积分截面。与之前同一数据集的结果相比，非极化截面的提取有显著改进，在五维强子反应相空间有更精细的分箱，通过实施新技术稳定截面提取并最小化与模拟统计相关的系统不确定性，这些改进对从这些数据中提取\(\gamma_v p N^*\)电耦合尤为重要。
英文摘要
Observables in the electroproduction of the $π^+π^-p$ reaction channel off the proton that are sensitive to the polarization of the virtual photon are presented for the first time in addition to the extraction of the nine single-differential and fully integrated cross sections within the kinematics area of 2.0~GeV$^2 < Q^2 < 5.0$~GeV$^2$ and 1.400~GeV $< W < 2.125$~GeV measured with the CLAS detector in Hall B at Jefferson Lab. The extraction of the unpolarized cross sections has been considerably improved in comparison with previously published results from this same dataset, offering finer binning over the five-dimensional hadronic reaction phase space, and including essential advances in the acceptance evaluation by implementing a new technique to stabilize the cross section extraction and minimize the systematic uncertainty associated with the simulation statistics. These improvements are of particular importance for the extraction of the $γ_v p N^*$ electrocouplings from these data.
Comments22 pages, 20 figures
