Measurement of deeply virtual Compton scattering off 
He4
 with the CEBAF Large Acceptance Spectrometer at Jefferson Lab

R. Dupré; M. Hattawy; N. A. Baltzell; S. Bültmann; R. De Vita; A. El Alaoui; L. El Fassi; H. Egiyan; F. X. Girod; M. Guidal; K. Hafidi; D. Jenkins; S. Liuti; Y. Perrin; S. Stepanyan; B. Torayev; E. Voutier; M. J. Amaryan; W. R. Armstrong; H. Atac; C. Ayerbe Gayoso; L. Barion; M. Battaglieri; I. Bedlinskiy; F. Benmokhtar; A. Bianconi; A. S. Biselli; M. Bondi; F. Bossù; S. Boiarinov; W. J. Briscoe; D. Bulumulla; V. Burkert; D. S. Carman; J. C. Carvajal; M. Caudron; A. Celentano; P. Chatagnon; V. Chesnokov; T. Chetry; G. Ciullo; B. A. Clary; P. L. Cole; M. Contalbrigo; G. Costantini; V. Crede; A. D'Angelo; N. Dashyan; M. Defurne; A. Deur; S. Diehl; C. Djalali; M. Ehrhart; L. Elouadrhiri; P. Eugenio; S. Fegan; A. Filippi; T. A. Forest; Y. Ghandilyan; G. P. Gilfoyle; R. W. Gothe; K. A. Griffioen; H. Hakobyan; T. B. Hayward; K. Hicks; A. Hobart; M. Holtrop; Y. Ilieva; D. G. Ireland; E. L. Isupov; H. S. Jo; K. Joo; S. Joosten; D. Keller; G. Khachatryan; A. Khanal; M. Khandaker; A. Kim; W. Kim; A. Kripko; V. Kubarovsky; S. E. Kuhn; L. Lanza; K. Livingston; M. L. Kabir; M. Leali; P. Lenisa; I. J. D. MacGregor; D. Marchand; N. Markov; V. Mascagna; M. Mayer; B. McKinnon; M. Mirazita; V. I. Mokeev; K. Neupane; S. Niccolai; T. R. O'Connell; M. Osipenko; M. Paolone; L. L. Pappalardo; R. Paremuzyan; E. Pasyuk; D. Payette; W. Phelps; N. Pivnyuk; O. Pogorelko; J. Poudel; Y. Prok; M. Ripani; J. Ritman; A. Rizzo; G. Rosner; P. Rossi; J. Rowley; F. Sabatié; C. Salgado; A. Schmidt; R. Schumacher; V. Sergeyeva; Y. Sharabian; U. Shrestha; D. Sokhan; O. Soto; N. Sparveris; I. I. Strakovsky; S. Strauch; N. Tyler; M. Ungaro; L. Venturelli; H. Voskanyan; A. Vossen; D. Watts; K. Wei; X. Wei; L. B. Weinstein; R. Wishart; M. H. Wood; B. Yale; N. Zachariou; J. Zhang;

doi:10.1103/physrevc.104.025203

Measurement of deeply virtual Compton scattering off He4 with the CEBAF Large Acceptance Spectrometer at Jefferson Lab

Physical Review C ◽

10.1103/physrevc.104.025203 ◽

2021 ◽

Vol 104 (2) ◽

Author(s):

R. Dupré ◽

M. Hattawy ◽

N. A. Baltzell ◽

S. Bültmann ◽

R. De Vita ◽

...

Keyword(s):

Compton Scattering ◽

Deeply Virtual Compton Scattering ◽

Virtual Compton Scattering ◽

Jefferson Lab ◽

Large Acceptance

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Studying neutron structure at Jefferson Lab through electron scattering off the deuteron, using CLAS12 and the Central Neutron Detector

Journal of Physics Conference Series ◽

10.1088/1742-6596/1643/1/012191 ◽

2020 ◽

Vol 1643 (1) ◽

pp. 012191

Author(s):

Paul Naidoo ◽

Daria Sokhan ◽

Pierre Chatagnon ◽

Silvia Niccolai ◽

Katheryne Price

Keyword(s):

Neutron Detector ◽

Meson Production ◽

Deeply Virtual Compton Scattering ◽

Virtual Compton Scattering ◽

High Energy ◽

Neutral Meson ◽

Deuteron Target ◽

Jefferson Lab ◽

3D Tomography ◽

Large Acceptance

Abstract Generalised Parton Distributions (GPDs) offer a way of imaging nucleons through 3D tomography. They can be accessed experimentally in processes such as Deeply Virtual Compton Scattering (DVCS) and Deeply Virtual Meson Production (DVMP), where a high energy electron scatters from a quark inside a nucleon and a high energy photon or meson is produced as a result. Jefferson Lab has recently completed its energy upgrade and Hall B houses the new, large-acceptance CLAS12 detector array optimised for measurements of DVCS and DVMP in the newly accessible kinematic regime. Measurements on the proton and neutron are complementary and both are necessary to facilitate access to the full set of GPDs and enable their flavour separation. Neutron DVCS and DVMP are possible with the use of a deuteron target – the first CLAS12 experiment with which has started taking data this year. To enable exclusive reconstruction of DVCS and neutral-meson DVMP, a dedicated detector for recoiling neutrons – the Central Neutron Detector (CND) – was integrated into CLAS12. We present the first CLAS12 deuteron-target experiment, with a focus on the performance of the CND.

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