由双自旋不对称性测量的质子形状因子比 $\mu_p G_E^p/G_M^p$
核实验
2020-03-25 v2
摘要
质子的电形状因子与磁形状因子之比 ，已在极化束流与极化靶的弹性电子-质子散射中测得，靶自旋取向几乎垂直于束流动量方向，四动量转移平方最高达 (GeV/c)，利用双自旋不对称性测量。该 测量结果与先前反冲极化数据的 依赖关系一致，并以一种不同的测量技术以及与该反冲极化测量不相关的系统误差，再次确认了高 下 Rosenbluth 方法与极化转移方法之间的分歧。在 =2.06 (GeV/c) 处测得的形状因子比为 ，与早先在相似运动学条件下用极化靶技术进行的测量一致。在 =5.66 (GeV/c) 处确定的形状因子比为 ，这是迄今用极化靶双自旋不对称性达到的最高 。
引用
@article{arxiv.1806.11156,
title = {Proton Form Factor Ratio, $\mu_p G_E^p/G_M^p$ from Double Spin Asymmetry},
author = {A. Liyanage and W. Armstrong and H. Kang and J. Maxwell and J. Mulholland and L. Ndukum and A. Ahmidouch and I. Albayrak and A. Asaturyan and O. Ates and H. Baghdasaryan and W. Boeglin and P. Bosted and E. Brash and C. Butuceanu and M. Bychkov and P. Carter and C. Chen and J-P. Chen and S. Choi and E. Christy and S. Covrig and D. Crabb and S. Danagoulian and A. Daniel and A. M. Davidenko and B. Davis and D. Day and W. Deconinck and A. Deur and J. Dunne and D. Dutta and L. El Fassi and M. Elaasar and C. Ellis and R. Ent and D. Flay and E. Frlez and D. Gaskell and O. Geagla and J. German and R. Gilman and T. Gogami and J. Gomez and Y. M. Goncharenko and O. Hashimoto and D. Higinbotham and T. Horn and G. M. Huber and M. Jones and M. K. Jones and N. Kalantarians and H-K. Kang and D. Kawama and C. Keppel and M. Khandaker and Y. Kim and P. M. King and M. Kohl and K. Kovacs and V. Kubarovsky and Y. Li and N. Liyanage and V. Mamyan and P. Markowitz and T. Maruta and Y. M. Melnik and Z-E. Meziani and A. Mkrtchyan and H. Mkrtchyan and V. V. Mochalov and P. Monaghan and A. Narayan and S. N. Nakamura and Nuruzzaman and L. Pentchev and D. Pocanic and M. Posik and A. Puckett and X. Qiu and J. Reinhold and S. Riordan and J. Roche and O. A. Rondo'n and B. Sawatzky and M. Shabestari and K. Slifer and G. Smith and L. F. Soloviev and P. Solvignon and V. Tadevosyan and L. Tang and A. N. Vasiliev and M. Veilleux and T. Walton and F. Wesselmann and S. A. Wood and H. Yao and Z. Ye and L. Zhu},
journal= {arXiv preprint arXiv:1806.11156},
year = {2020}
}