Deeply virtual Compton scattering using a positron beam in Hall-C at Jefferson Lab

Deeply virtual Compton scattering using a positron beam in Hall-C at Jefferson Lab
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DOI：
10.1140/epja/s10050-021-00581-x
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发表时间：
2021-05
期刊：
The European Physical Journal A
影响因子：
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通讯作者：
A. Afanasev;I. Albayrak;S. Ali;M. Amaryan;J. Annand;A. Asaturyan;V. Bellini;V. Berdnikov;M. Boer;K. Brinkmann;W. Briscoe;A. Camsonne;M. Caudron;L. Causse;M. Carmignotto;D. Day;M. Defurne;S. Diehln;R. Ent;P. Chatagnon;R. Dupr'e;D. Dutta;M. Ehrhart;M. A. I. Fernando;T. Forest;M. Guidal;J. Grames;P. Guèye;S. Habet;David Hamilton;A. Hobart;T. Horn;C. Hyde;G. Kalicy;D. Keller;C. Keppel;M. Kerver;E. Kinney;H. Ko;D. Marchand;P. Markowitze;Malek Mazouz;M. McCaughan;B. Mckinnon;A. Mkrtchyan;H. Mkrtchyan;M. Muhoza;C. Camacho;J. Murphy;P. Nadel-Turonski;S. Niccolai;G. Niculescu;R. Novotný;R. Paremuzyan;I. Pegg;K. Price;H. Rashad;J. Roche;R. Rondón;B. Sawatzky;V. Sergeyeva;S. vSirca;A. Somov;I. Strakovsky;V. Tadevosyan;R. Trotta;H. Voskanyan;E. Voutier;B. Wojtsekhowski;S. Wood;S. Zhamkochyan;J. Zhang;S. Zhao;C. Zorn
A. Afanasev;I. Albayrak;S. Ali;M. Amaryan;J. Annand;A. Asaturyan;V. Bellini;V. Berdnikov;M. Boer;K. Brinkmann;W. Briscoe;A. Camsonne;M. Caudron;L. Causse;M. Carmignotto;D. Day;M. Defurne;S. Diehln;R. Ent;P. Chatagnon;R. Dupr'e;D. Dutta;M. Ehrhart;M. A. I. Fernando;T. Forest;M. Guidal;J. Grames;P. Guèye;S. Habet;David Hamilton;A. Hobart;T. Horn;C. Hyde;G. Kalicy;D. Keller;C. Keppel;M. Kerver;E. Kinney;H. Ko;D. Marchand;P. Markowitze;Malek Mazouz;M. McCaughan;B. Mckinnon;A. Mkrtchyan;H. Mkrtchyan;M. Muhoza;C. Camacho;J. Murphy;P. Nadel-Turonski;S. Niccolai;G. Niculescu;R. Novotný;R. Paremuzyan;I. Pegg;K. Price;H. Rashad;J. Roche;R. Rondón;B. Sawatzky;V. Sergeyeva;S. vSirca;A. Somov;I. Strakovsky;V. Tadevosyan;R. Trotta;H. Voskanyan;E. Voutier;B. Wojtsekhowski;S. Wood;S. Zhamkochyan;J. Zhang;S. Zhao;C. Zorn
中科院分区：
其他
文献类型：
--
作者：
A. Afanasev;I. Albayrak;S. Ali;M. Amaryan;J. Annand;A. Asaturyan;V. Bellini;V. Berdnikov;M. Boer;K. Brinkmann;W. Briscoe;A. Camsonne;M. Caudron;L. Causse;M. Carmignotto;D. Day;M. Defurne;S. Diehln;R. Ent;P. Chatagnon;R. Dupr'e;D. Dutta;M. Ehrhart;M. A. I. Fernando;T. Forest;M. Guidal;J. Grames;P. Guèye;S. Habet;David Hamilton;A. Hobart;T. Horn;C. Hyde;G. Kalicy;D. Keller;C. Keppel;M. Kerver;E. Kinney;H. Ko;D. Marchand;P. Markowitze;Malek Mazouz;M. McCaughan;B. Mckinnon;A. Mkrtchyan;H. Mkrtchyan;M. Muhoza;C. Camacho;J. Murphy;P. Nadel-Turonski;S. Niccolai;G. Niculescu;R. Novotný;R. Paremuzyan;I. Pegg;K. Price;H. Rashad;J. Roche;R. Rondón;B. Sawatzky;V. Sergeyeva;S. vSirca;A. Somov;I. Strakovsky;V. Tadevosyan;R. Trotta;H. Voskanyan;E. Voutier;B. Wojtsekhowski;S. Wood;S. Zhamkochyan;J. Zhang;S. Zhao;C. Zorn

文献摘要

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我们建议使用霍尔C的高动量光谱仪与中性粒子光谱仪（NPS）结合使用正电子束进行深度虚拟康普顿散射（DVCS）截面的高精度测量。测量与带相反电荷的入射光束的结合是唯一明确的方法来解开DVCSterm在光子电产生截面中的贡献与它对贝特-希特勒振幅的干扰。这为约束核子的广义部子分布提供了一种更强的方法。将涵盖从非极化质子目标发射的11gev光束所能获得的广泛的运动学。每个贡献的依赖性将被独立衡量。
We propose to use the High Momentum Spectrometer of Hall C combined with the Neutral Particle Spectrometer (NPS) to perform high precision measurements of the Deeply Virtual Compton Scattering (DVCS) cross section using a beam of positrons. The combination of measurements with oppositely charged incident beams is the only unambiguous way to disentangle the contribution of the DVCSterm in the photon electroproduction cross section from its interference with the Bethe-Heitler amplitude. This provides a stronger way to constrain the Generalized Parton Distributions of the nucleon. A wide range of kinematics accessible with an 11 GeV beam off an unpolarized proton target will be covered. Thedependence of each contribution will be measured independently.