利用 GlueX 对含奇异夸克的介子和重子的初步研究
核实验
2013-05-08 v1
摘要
GlueX 实验的主要动机是寻找并最终研究在 碰撞中产生的介子谱中的胶子激发模式。近期的格点 QCD 计算预测存在丰富的混杂介子谱，这些介子具有奇异和非奇异的 ，对应于与胶子场耦合的 态（ 或 ）。只有通过对许多不同强子末态进行系统的振幅分析，才能实现对混杂谱的 thorough 研究，包括识别同位旋矢量三重态（电荷为 0 和 ）以及每个预测的 混杂组合的两个同位旋标量成员 和 。对 \gx 探测器性能的详细研究表明，使用基线探测器配置可以识别含有 Kaon 的特定末态。Kaon 探测效率与含隐奇异粒子相对较低的产生截面相结合，将需要高强度运行才能使此类态的分析变得可行。我们提议收集总共 200 天的物理分析数据，平均强度为每秒 个标记光子打靶。该数据样本将提供比 GlueX 初始运行高一个数量级的统计量改进，这将使我们能够启动研究含奇异夸克介子和重子的计划。此外，增加的强度将允许我们研究在 GlueX 初始阶段可能受统计量限制的反应。总体而言，这将显著增加 \gx 在混杂介子和激发态 重子知识方面取得关键实验进展的潜力。
引用
@article{arxiv.1305.1523,
title = {An initial study of mesons and baryons containing strange quarks with GlueX},
author = {The GlueX Collaboration and A. AlekSejevs and S. Barkanova and M. Dugger and B. Ritchie and I. Senderovich and E. Anassontzis and P. Ioannou and C. Kourkoumeli and G. Voulgaris and N. Jarvis and W. Levine and P. Mattione and W. McGinley and C. A. Meyer and R. Schumacher and M. Staib and P. Collins and F. Klein and D. Sober and D. Doughty and A. Barnes and R. Jones and J. McIntyre and F. Mokaya and B. Pratt and W. Boeglin and L. Guo and P. Khetarpal and E. Pooser and J. Reinhold and H. Al Ghoul and S. Capstick and V. Crede and P. Eugenio and A. Ostrovidov and N. Sparks and A. Tsaris and D. Ireland and K. Livingston and D. Bennett and J. Bennett and J. Frye and M. Lara and J. Leckey and R. Mitchell and K. Moriya and M. R. Shepherd and A. Szczepaniak and R. Miskimen and A. Mushkarenkov and B. Guegan and J. Hardin and J. Stevens and M. Williams and A. Ponosov and S. Somov and C. Salgado and P. Ambrozewicz and A. Gasparian and R. Pedroni and T. Black and L. Gan and S. Dobbs and K. K. Seth and A. Tomaradze and J. Dudek and F. Close and E. Swanson and S. Denisov and G. Huber and D. Kolybaba and S. Krueger and G. Lolos and Z. Papandreou and A. Semenov and I. Semenova and M. Tahani and W. Brooks and H. Hakobyan and S. Kuleshov and O. Soto and A. Toro and I. Vega and R. White and F. Barbosa and E. Chudakov and H. Egiyan and M. Ito and D. Lawrence and M. McCaughan and M. Pennington and L. Pentchev and Y. Qiang and E. S. Smith and A. Somov and S. Taylor and T. Whitlatch and E. Wolin and B. Zihlmann},
journal= {arXiv preprint arXiv:1305.1523},
year = {2013}
}
备注
22 pages, 8 figures