8.2–8.8 GeV 下 Λ(1520) 光生中自旋密度矩阵元的测量
核实验
2022-03-04 v2 高能物理 - 实验
摘要
我们报告了在光生反应 γ p→ Λ(1520)K^+ 中通过其后继衰变至 K^- p 对 Λ(1520) 自旋密度矩阵元的测量。该测量作为 Jefferson 实验室 D 厅 GlueX 实验计划的一部分，使用能量为 E_γ = 8.2–8.8 GeV 的线偏振光子束进行。这些是此光子能量范围内的首次此类测量。结果以动量转移平方 -(t-t_0) 的分箱形式呈现。我们将结果与 Reggeon 交换模型比较，并确定在 Λ(1520) 光生中自然交换振幅占主导。
引用
@article{arxiv.2107.12314,
title = {Measurement of Spin Density Matrix Elements in $\Lambda(1520)$ Photoproduction at 8.2-8.8 GeV},
author = {GlueX Collaboration and S. Adhikari and C. S. Akondi and M. Albrecht and A. Ali and M. Amaryan and A. Asaturyan and A. Austregesilo and Z. Baldwin and F. Barbosa and J. Barlow and E. Barriga and R. Barsotti and T. D. Beattie and V. V. Berdnikov and T. Black and W. Boeglin and W. J. Briscoe and T. Britton and W. K. Brooks and E. Chudakov and S. Cole and P. L. Cole and O. Cortes and V. Crede and M. M. Dalton and T. Daniels and A. Deur and S. Dobbs and A. Dolgolenko and R. Dotel and M. Dugger and R. Dzhygadlo and H. Egiyan and T. Erbora and A. Ernst and P. Eugenio and C. Fanelli and S. Fegan and J. Fitches and A. M. Foda and S. Furletov and L. Gan and H. Gao and A. Gasparian and C. Gleason and K. Goetzen and V. S. Goryachev and L. Guo and M. Hagen and H. Hakobyan and A. Hamdi and J. Hernandez and N. D. Hoffman and G. Hou and G. M. Huber and A. Hurley and D. G. Ireland and M. M. Ito and I. Jaegle and N. S. Jarvis and R. T. Jones and V. Kakoyan and G. Kalicy and M. Kamel and V. Khachatryan and M. Khatchatryan and C. Kourkoumelis and S. Kuleshov and A. LaDuke and I. Larin and D. Lawrence and D. I. Lersch and H. Li and W. B. Li and B. Liu and K. Livingston and G. J. Lolos and K. Luckas and V. Lyubovitskij and D. Mack and A. Mahmood and H. Marukyan and V. Matveev and M. McCaughan and M. McCracken and C. A. Meyer and R. Miskimen and R. E. Mitchell and K. Mizutani and V. Neelamana and F. Nerling and L. Ng and A. I. Ostrovidov and Z. Papandreou and C. Paudel and P. Pauli and R. Pedroni and L. Pentchev and K. J. Peters and J. Reinhold and B. G. Ritchie and J. Ritman and G. Rodriguez and D. Romanov and C. Romero and K. Saldana and C. Salgado and S. Schadmand and A. M. Schertz and A. Schick and A. Schmidt and R. A. Schumacher and J. Schwiening and P. Sharp and X. Shen and M. R. Shepherd and A. Smith and E. S. Smith and D. I. Sober and A. Somov and S. Somov and O. Soto and J. R. Stevens and I. I. Strakovsky and B. Sumner and K. Suresh and V. V. Tarasov and S. Taylor and A. Teymurazyan and A. Thiel and G. Vasileiadis and T. Viducic and T. Whitlatch and N. Wickramaarachchi and M. Williams and Y. Yang and J. Zarling and Z. Zhang and Z. Zhao and J. Zhou and X. Zhou and Q. Zhou and B. Zihlmann and D. I. Glazier and V. Mathieu},
journal= {arXiv preprint arXiv:2107.12314},
year = {2022}
}
备注
11 pages, 8 figures, accepted version