从 6 GeV JLab 数据提取的分离 kaon 电产生截面与 kaon 形状因子
核实验
2018-03-07 v1
摘要
作为 Mandelstam 变量 的函数，研究了 () 反应，所用数据来自在 6 GeV 杰斐逊实验室（JLab）C 厅开展的 E01-004（FPI-2）和 E93-018 实验。在四动量转移 为 1.00、1.36 和 2.07 GeV 处，截面被完全分离为纵向与横向分量以及两项干涉项。利用 Vanderhaeghen、Guidal 和 Laget 的 Regge 模型从纵向截面提取了 kaon 形状因子。结果确立了此前已成功用于 pion 分析的、提取 kaon 形状因子的方法。来自 12 GeV JLab 实验的数据预计具有足够精度以区分理论预言，例如采用现代部分子分布振幅的近期微扰 QCD 计算。轻介子的主导扭度行为预计在 介于 5-10 GeV 的值时显现，这使得几 GeV 区间的数据尤为有趣。我们在固定 和 下提取的纵向截面的 依赖性似乎在实验不确定度内与 QCD 因子化预言一致。
引用
@article{arxiv.1801.01536,
title = {Separated Kaon Electroproduction Cross Section and the Kaon Form Factor from 6 GeV JLab Data},
author = {M. Carmignotto and S. Ali and K. Aniol and J. Arrington and B. Barrett and E. J. Beise and H. P. Blok and W. Boeglin and E. J. Brash and H. Breuer and C. C. Chang and M. E. Christy and A. Dittmann and R. Ent and H. Fenker and D. Gaskell and E. Gibson and R. J. Holt and T. Horn and G. M. Huber and S. Jin and M. K. Jones and C. E. Keppel and W. Kim and P. M. King and V. Kovaltchouk and J. Liu and G. J. Lolos and D. J. Mack and D. J. Margaziotis and P. Markowitz and A. Matsumura and D. Meekins and T. Miyoshi and H. Mkrtchyan and G. Niculescu and I. Niculescu and Y. Okayasu and I. Pegg and L. Pentchev and C. Perdrisat and D. Potterveld and V. Punjabi and P. E. Reimer and J. Reinhold and J. Roche and A. Sarty and G. R. Smith and V. Tadevosyan and L. G. Tang and R. Trotta and V. Tvaskis and A. Vargas and S. Vidakovic and J. Volmer and W. Vulcan and G. Warren and S. A. Wood and C. Xu and X. Zheng},
journal= {arXiv preprint arXiv:1801.01536},
year = {2018}
}