中文

来自纵向和横向极化数据的质子 $g_1$ 自旋结构函数的新低 $Q^2$ 测量

核实验 2026-07-07 v1 高能物理 - 实验
作者: D. Ruth , R. Zielinski , C. Gu , M. Allada , T. Badman , M. Huang , J. Liu , P. Zhu , K. Allada , J. Zhang , A. Camsonne , J. P. Chen , K. Slifer , K. Aniol , J. Annand , J. Arrington , T. Averett , H. Baghdasaryan , V. Bellini , W. Boeglin , J. Brock , C. Carlin , C. Chen , E. Cisbani , D. Crabb , A. Daniel , D. Day , R. Duve , L. El Fassi , M. Friedman , E. Fuchey , H. Gao , R. Gilman , S. Glamazdin , P. Gueye , M. Hafez , Y. Han , O. Hansen , M. Hashemi Shabestari , O. Hen , D. Higinbotham , T. Horn , S. Iqbal , E. Jensen , H. Kang , C. D. Keith , A. Kelleher , D. Keller , H. Khanal , I. Korover , G. Kumbartzki , W. Li , J. Lichtenstadt , R. Lindgren , E. Long , S. Malace , P. Markowitz , J. Maxwell , D. M. Meekins , Z. E. Meziani , C. McLean , R. Michaels , M. Mihovilovic , N. Muangma , C. Munoz Camacho , J. Musson , K. Myers , Y. Oh , M. Pannunzio Carmignotto , C. Perdrisat , S. Phillips , E. Piasetzky , J. Pierce , V. Punjabi , Y. Qiang , P. E. Reimer , Y. Roblin , G. Ron , O. Rondon , G. Russo , K. Saenboonruang , B. Sawatzky , A. Shahinyan , R. Shneor , J. Sjoegren , P. Solvignon-Slifer , N. Sparveris , V. Sulkosky , F. Wesselmann , W. Yan , H. Yang , H. Yao , Z. Ye , M. Yurov , Y. Zhang , Y. X. Zhao , X. Zheng
在 arXiv 上查看 ↗ PDF ↗

摘要

质子的自旋结构已被证明远比最初认为的复杂，并且一直是许多实验研究的主题。特别令人感兴趣的是自旋结构函数 g1g_1 和 g2g_2，它们可用于生成矩，以直接将实验结果与手征微扰理论和量子色动力学（QCD）的其他理论进行比较。质子的 g1g_1 结构函数是另外两个近期低动量转移实验的主题，但目前没有已发表的低动量转移测量在相同运动学下同时使用纵向极化和横向极化靶收集质子结构函数数据。在本文中，我们介绍了 Jefferson Lab E08-027 实验的纵向极化结果，以及将该新结果与同一实验先前发表的横向极化数据相结合的关联矩。这些结果提供了在共振区以非常高的精度测量的质子 g1g_1 提取，并为依赖于 g1g_1 的和规则和矩的值提供了新信息。

关键词

质子自旋 结构函数 g1 极化靶 Jefferson Lab 共振区

引用

@article{arxiv.2607.05741,
  title  = {A New Low $Q^2$ Measurement of the Proton's $g_1$ Spin Structure Function from Longitudinal & Transverse Polarized Data},
  author = {D. Ruth and R. Zielinski and C. Gu and M. Allada and T. Badman and M. Huang and J. Liu and P. Zhu and K. Allada and J. Zhang and A. Camsonne and J. P. Chen and K. Slifer and K. Aniol and J. Annand and J. Arrington and T. Averett and H. Baghdasaryan and V. Bellini and W. Boeglin and J. Brock and C. Carlin and C. Chen and E. Cisbani and D. Crabb and A. Daniel and D. Day and R. Duve and L. El Fassi and M. Friedman and E. Fuchey and H. Gao and R. Gilman and S. Glamazdin and P. Gueye and M. Hafez and Y. Han and O. Hansen and M. Hashemi Shabestari and O. Hen and D. Higinbotham and T. Horn and S. Iqbal and E. Jensen and H. Kang and C. D. Keith and A. Kelleher and D. Keller and H. Khanal and I. Korover and G. Kumbartzki and W. Li and J. Lichtenstadt and R. Lindgren and E. Long and S. Malace and P. Markowitz and J. Maxwell and D. M. Meekins and Z. E. Meziani and C. McLean and R. Michaels and M. Mihovilovic and N. Muangma and C. Munoz Camacho and J. Musson and K. Myers and Y. Oh and M. Pannunzio Carmignotto and C. Perdrisat and S. Phillips and E. Piasetzky and J. Pierce and V. Punjabi and Y. Qiang and P. E. Reimer and Y. Roblin and G. Ron and O. Rondon and G. Russo and K. Saenboonruang and B. Sawatzky and A. Shahinyan and R. Shneor and J. Sjoegren and P. Solvignon-Slifer and N. Sparveris and V. Sulkosky and F. Wesselmann and W. Yan and H. Yang and H. Yao and Z. Ye and M. Yurov and Y. Zhang and Y. X. Zhao and X. Zheng},
  journal= {arXiv preprint arXiv:2607.05741},
  year   = {2026}
}