通过质子上的深度虚康普顿散射初探胶子
高能物理 - 实验
2018-02-07 v1 高能物理 - 唯象学
核实验
摘要
质子由夸克和胶子组成，它们受强相互作用中最难以捉摸的机制——即禁闭——所束缚。在本工作中，我们利用深度虚康普顿散射（DVCS）研究夸克和胶子的动力学：一个多 GeV 电子产生一个高度虚的光子，该光子与质子散射，随后质子辐射出一个高能光子。类似于全息术，不仅测量 DVCS 振幅的大小，还测量其相位，可以对质子的内部结构进行三维成像。该相位可通过 DVCS 与 Bethe-Heitler（BH）过程的量子力学干涉来获得，在 BH 过程中，末态光子由电子而非质子辐射。本文通过利用 DVCS 和 BH 振幅截然不同的能量依赖性，报告了 BH-DVCS 干涉的首次完整测定。在散射过程预期发生于质子中单个夸克上的高能区域，这些精确测量显示出对强相互作用载体——胶子的引人注目的敏感性。
引用
@article{arxiv.1703.09442,
title = {A Glimpse of Gluons through Deeply Virtual Compton Scattering on the Proton},
author = {M. Defurne and A. Martì Jiménez-Argüello and Z. Ahmed and H. Albataineh and K. Allada and K. A. Aniol and V. Bellini and M. Benali and W. Boeglin and P. Bertin and M. Brossard and A. Camsonne and M. Canan and S. Chandavar and C. Chen and J. -P. Chen and C. W. de Jager and R. de Leo and C. Desnault and A. Deur and L. El Fassi and R. Ent and D. Flay and M. Friend and E. Fuchey and S. Frullani and F. Garibaldi and D. Gaskell and A. Giusa and O. Glamazdin and S. Golge and J. Gomez and O. Hansen and D. Higinbotham and T. Holmstrom and T. Horn and J. Huang and M. Huang and C. E. Hyde and S. Iqbal and F. Itard and H. Kang and A. Kelleher and C. Keppel and S. Koirala and I. Korover and J. J. LeRose and R. Lindgren and E. Long and M. Magne and J. Mammei and D. J. Margaziotis and P. Markowitz and M. Mazouz and F. Meddi and D. Meekins and R. Michaels and M. Mihovilovic and C. Munoz Camacho and P. Nadel-Turonski and N. Nuruzzaman and R. Paremuzyan and A. Puckett and V. Punjabi and Y. Qiang and A. Rakhman and M. N. H. Rashad and S. Riordan and J. Roche and G. Russo and F. Sabatié and K. Saenboonruang and A. Saha and B. Sawatzky and L. Selvy and A. Shahinyan and S. Sirca and P. Solvignon and M. L. Sperduto and R. Subedi and V. Sulkosky and C. Sutera and W. A. Tobias and G. M. Urciuoli and D. Wang and B. Wojtsekhowski and H. Yao and Z. Ye and X. Zhan and J. Zhang and B. Zhao and Z. Zhao and X. Zheng and P. Zhu},
journal= {arXiv preprint arXiv:1703.09442},
year = {2018}
}