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Deeply Virtual Compton Scattering Cross Section at High BjorkenxB
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-06-23 , DOI: 10.1103/physrevlett.128.252002
F Georges 1 , M N H Rashad 2 , A Stefanko 3 , M Dlamini 4 , B Karki 4 , S F Ali 5 , P-J Lin 1 , H-S Ko 1, 6 , N Israel 4 , D Adikaram 7 , Z Ahmed 8 , H Albataineh 9 , B Aljawrneh 10 , K Allada 11 , S Allison 2 , S Alsalmi 12 , D Androic 13 , K Aniol 14 , J Annand 15 , H Atac 16 , T Averett 17 , C Ayerbe Gayoso 17 , X Bai 18 , J Bane 19 , S Barcus 17 , K Bartlett 17 , V Bellini 20 , R Beminiwattha 21 , J Bericic 7 , D Biswas 22 , E Brash 23 , D Bulumulla 2 , J Campbell 24 , A Camsonne 7 , M Carmignotto 5 , J Castellano 25 , C Chen 22 , J-P Chen 7 , T Chetry 4 , M E Christy 22 , E Cisbani 26 , B Clary 27 , E Cohen 28 , N Compton 4 , J C Cornejo 3, 17 , S Covrig Dusa 7 , B Crowe 29 , S Danagoulian 10 , T Danley 4 , F De Persio 26 , W Deconinck 17 , M Defurne 30 , C Desnault 1 , D Di 18 , M Duer 28 , B Duran 16 , R Ent 7 , C Fanelli 11 , G Franklin 3 , E Fuchey 27 , C Gal 18 , D Gaskell 7 , T Gautam 22 , O Glamazdin 31 , K Gnanvo 18 , V M Gray 17 , C Gu 18 , T Hague 12 , G Hamad 4 , D Hamilton 15 , K Hamilton 15 , O Hansen 7 , F Hauenstein 2 , W Henry 16 , D W Higinbotham 7 , T Holmstrom 32 , T Horn 5, 7 , Y Huang 18 , G M Huber 8 , C E Hyde 2 , H Ibrahim 33 , C-M Jen 34 , K Jin 18 , M Jones 7 , A Kabir 12 , C Keppel 7 , V Khachatryan 7, 35, 36 , P M King 4 , S Li 37 , W B Li 8 , J Liu 18 , H Liu 38 , A Liyanage 22 , J Magee 17 , S Malace 7 , J Mammei 39 , P Markowitz 25 , E McClellan 7 , M Mazouz 40 , F Meddi 26 , D Meekins 7 , K Mesik 41 , R Michaels 7 , A Mkrtchyan 5 , R Montgomery 15 , C Muñoz Camacho 1 , L S Myers 7 , P Nadel-Turonski 7 , S J Nazeer 22 , V Nelyubin 18 , D Nguyen 18 , N Nuruzzaman 22 , M Nycz 12 , O F Obretch 27 , L Ou 11 , C Palatchi 18 , B Pandey 22 , S Park 35 , K Park 2 , C Peng 42 , R Pomatsalyuk 31 , E Pooser 7 , A J R Puckett 27 , V Punjabi 43 , B Quinn 3 , S Rahman 39 , P E Reimer 44 , J Roche 4 , I Sapkota 5 , A Sarty 45 , B Sawatzky 7 , N H Saylor 46 , B Schmookler 11 , M H Shabestari 47 , A Shahinyan 48 , S Sirca 49 , G R Smith 7 , S Sooriyaarachchilage 22 , N Sparveris 16 , R Spies 39 , T Su 12 , A Subedi 47 , V Sulkosky 18 , A Sun 3 , L Thorne 3 , Y Tian 50 , N Ton 18 , F Tortorici 20 , R Trotta 51 , G M Urciuoli 26 , E Voutier 1 , B Waidyawansa 7 , Y Wang 17 , B Wojtsekhowski 7 , S Wood 7 , X Yan 52 , L Ye 47 , Z Ye 18 , C Yero 25 , J Zhang 18 , Y Zhao 35 , P Zhu 53 ,
Affiliation  

We report high-precision measurements of the deeply virtual Compton scattering (DVCS) cross section at high values of the Bjorken variable xB. 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 xB, while systematically including helicity flip amplitudes. In particular, the high accuracy of the present data demonstrates sensitivity to some very poorly known CFFs.

中文翻译:

高 BjorkenxB 处的深度虚拟康普顿散射截面

我们报告了在 Bjorken 变量的高值下对深度虚拟康普顿散射 (DVCS) 横截面的高精度测量X. DVCS 对核子的广义部分子分布很敏感,它提供了对其内部成分的三维描述。使用 DVCS 横截面的精确解析表达式,用于初始和最终电子和核子以及最终状态光子的所有可能极化状态,我们提出了核子的所有四个螺旋性守恒康普顿形状因子 (CFF) 的第一次实验提取作为一个函数X,同时系统地包括螺旋翻转幅度。特别是,当前数据的高精度表明了对一些鲜为人知的 CFF 的敏感性。
更新日期:2022-06-23
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