Deeply virtual Compton scattering cross section at high Bjorken $x_B$
F. Georges, M. N. H. Rashad, A. Stefanko, M. Dlamini, B. Karki, S. F. Ali, P-J. Lin, H-S Ko, N. Israel, D. Adikaram, Z. Ahmed, H. Albataineh, B. Aljawrneh, K. A… 展开作者
F. Georges, M. N. H. Rashad, A. Stefanko, M. Dlamini, B. Karki, S. F. Ali, P-J. Lin, H-S Ko, N. Israel, D. Adikaram, Z. Ahmed, H. Albataineh, B. Aljawrneh, K. Allada, S. Allison, S. Alsalmi, D. Androic, K. Aniol, J. Annand, H. Atac, T. Averett, C. Ayerbe Gayoso, X. Bai, J. Bane, S. Barcus, K. Bartlett, V. Bellini, R. Beminiwattha, J. Bericic, D. Biswas, E. Brash, D. Bulumulla, J. Campbell, A. Camsonne, M. Carmignotto, J. Castellano, C. Chen, J-P. Chen, T. Chetry, M. E. Christy, E. Cisbani, B. Clary, E. Cohen, N. Compton, J. C. Cornejo, S. Covrig Dusa, B. Crowe, S. Danagoulian, T. Danley, F. De Persio, W. Deconinck, M. Defurne, C. Desnault, D. Di, M. Duer, B. Duran, R. Ent, C. Fanelli, G. Franklin, E. Fuchey, C. Gal, D. Gaskell, T. Gautam, O. Glamazdin, K. Gnanvo, V. M. Gray, C. Gu, T. Hague, G. Hamad, D. Hamilton, K. Hamilton, O. Hansen, F. Hauenstein, W. Henry, D. W. Higinbotham, T. Holmstrom, T. Horn, Y. Huang, G. M. Huber, C. Hyde, H. Ibrahim, C-M. Jen, K. Jin, M. Jones, A. Kabir, C. Keppel, V. Khachatryan, P. M. King, S. Li, W. B. Li, J. Liu, H. Liu, A. Liyanage, J. Magee, S. Malace, J. Mammei, P. Markowitz, E. McClellan, M. Mazouz, F. Meddi, D. Meekins, K. Mesik, R. Michaels, A. Mkrtchyan, R. Montgomery, C. Muñoz Camacho, L. S. Myers, P. Nadel-Turonski, S. J. Nazeer, V. Nelyubin, D. Nguyen, N. Nuruzzaman, M. Nycz, O. F. Obretch, L. Ou, C. Palatchi, B. Pandey, S. Park, K. Park, C. Peng, R. Pomatsalyuk, E. Pooser, A. J. R. Puckett, V. Punjabi, B. Quinn, S. Rahman, P. E. Reimer, J. Roche, I. Sapkota, A. Sarty, B. Sawatzky, N. H. Saylor, B. Schmookler, M. H. Shabestari, A. Shahinyan, S. Sirca, G. R. Smith, S. Sooriyaarachchilage, N. Sparveris, R. Spies, T. Su, A. Subedi, V. Sulkosky, A. Sun, L. Thorne, Y. Tian, N. Ton, F. Tortorici, R. Trotta, G. M. Urciuoli, E. Voutier, B. Waidyawansa, Y. Wang, B. Wojtsekhowski, S. Wood, X. Yan, L. Ye, Z. Ye, C. Yero, J. Zhang, Y. Zhao, P. Zhu
We report high-precision measurements of the Deeply Virtual Compton Scattering (DVCS) cross section at high values of the Bjorken variable $x_B$. DVCS is sensitive to the Generalized Parton Distributions of the nucleon, which provide a three-dimensional description of its internal constituents. Using the exact analytic expression of the DVCS cross section for all possible polarization states of the initial and final electron and nucleon, and final state photon, we present the first experimental extraction of all four helicity-conserving Compton Form Factors (CFFs) of the nucleon as a function of $x_B$, while systematically including helicity flip amplitudes. In particular, the high accuracy of the present data demonstrates sensitivity to some very poorly known CFFs.
The role of the chiral anomaly in polarized deeply inelastic scattering I: Finding the triangle graph inside the box diagram in Bjorken and Regge asymptotics
我们研究了最近的深虚康普顿散射（DVCS）的数据在一个双重参数化的广义部分子分布（GPD）。这种参数化允许量化的最大数量的信息，可以从DVCS数据中提取，在一个“精粹”的功能。我们提出了一个“零步”模型，后者完全基于前向夸克密度，提供了一个参数的DVCS振幅的虚部的预测。结果表明，$e p \to e p γ$光束螺旋度不对称的体效应可以在这样的模型内理解。
Coherent deeply virtual Compton scattering on helium-4 beyond leading power
IRFU, CEA, Université Paris-Saclay（法国原子能与替代能源署萨克雷大学）；Center for Frontiers in Nuclear Science, Stony Brook University（石溪大学核科学前沿中心）；Centre de Physique Théorique, CNRS, École polytechnique, I.P. Paris（巴黎理工学院巴黎综合理工学院理论物理中心法国国家科学研究中心）；National Centre for Nuclear Research (NCBJ)（波兰国家核研究中心）
