质子奇异矢量形状因子的新精度极限
核实验
2015-05-28 v1
摘要
在四动量转移平方 Q2 = 0.624 GeV 和束流能量 E = 3.48 GeV 下，测量了极化电子在非极化质子上的弹性散射中的宇称不守恒截面不对称性，结果为 A_PV = -23.80 ± 0.78 (统计) ± 0.36 (系统) ppm。该结果与奇异夸克对电形状因子和磁形状因子组合 G_E^s + 0.517 G_M^s = 0.003 ± 0.010 (统计) ± 0.004 (系统) ± 0.009 (ff) 的零贡献一致，其中第三个误差源于电磁形状因子和辐射修正的精度极限。通过本次测量，全球关于奇异夸克对核子形状因子贡献的数据与零一致，且不超过质子形状因子的百分之几。
引用
@article{arxiv.1107.0913,
title = {New Precision Limit on the Strange Vector Form Factors of the Proton},
author = {HAPPEX collaboration and Z. Ahmed and K. Allada and K. A. Aniol and D. S. Armstrong and J. Arrington and P. Baturin and V. Bellini and J. Benesch and R. Beminiwattha and F. Benmokhtar and M. Canan and A. Camsonne and G. D. Cates and J. -P. Chen and E. Chudakov and E. Cisbani and M. M. Dalton and C. W. de Jager and R. De Leo and W. Deconinck and P. Decowski and X. Deng and A. Deur and C. Dutta and G. B. Franklin and M. Friend and S. Frullani and F. Garibaldi and A. Giusa and A. Glamazdin and S. Golge and K. Grimm and O. Hansen and D. W. Higinbotham and R. Holmes and T. Holmstrom and J. Huang and M. Huang and C. E. Hyde and C. M. Jen and G. Jin and D. Jones and H. Kang and P. King and S. Kowalski and K. S. Kumar and J. H. Lee and J. J. LeRose and N. Liyanage and E. Long and D. McNulty and D. Margaziotis and F. Meddi and D. G. Meekins and L. Mercado and Z. -E. Meziani and R. Michaels and C. Munoz-Camacho and M. Mihovilovic and N. Muangma and K. E. Myers and S. Nanda and A. Narayan and V. Nelyubin and Nuruzzaman and Y. Oh and K. Pan and D. Parno and K. D. Paschke and S. K. Phillips and X. Qian and Y. Qiang and B. Quinn and A. Rakhman and P. E. Reimer and K. Rider and S. Riordan and J. Roche and J. Rubin and G. Russo and K. Saenboonruang and A. Saha and B. Sawatzky and R. Silwal and S. Sirca and P. A. Souder and M. Sperduto and R. Subedi and R. Suleiman and V. Sulkosky and C. M. Sutera and W. A. Tobias and G. M. Urciuoli and B. Waidyawansa and D. Wang and J. Wexler and R. Wilson and B. Wojtsekhowski and X. Zhan and X. Yan and H. Yao and L. Ye and B. Zhao and X. Zheng},
journal= {arXiv preprint arXiv:1107.0913},
year = {2015}
}
备注
5 pages, 3 figures