Deeply virtual Compton scattering using a positron beam in Hall-C at Jefferson Lab
Abstract
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 DVCS term 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. The dependence of each contribution will be measured independently.
Keywords
Cite
@article{arxiv.2105.06540,
title = {Deeply virtual Compton scattering using a positron beam in Hall-C at Jefferson Lab},
author = {A. Afanasev and I. Albayrak and S. Ali and M. Amaryan and J. R. M. Annand and A. Asaturyan and V. Bellini and V. V. Berdnikov and M. Boer and K. Brinkmann and W. J. Briscoe and A. Camsonne and M. Caudron and L. Causse and M. Carmignotto and D. Day and M. Defurne and S. Diehl and R. Ent and P. Chatagnon and R. Dupré and D. Dutta and M. Ehrhart and M. A. I. Fernando and T. Forest and M. Guidal and J. Grames and P. Gueye and S. Habet and D. J. Hamilton and A. Hobart and T. Horn and C. Hyde and G. Kalicy and D. Keller and C. Keppel and M. Kerver and E. Kinney and H. -S. Ko and D. Marchand and P. Markowitze and M. Mazouz and M. McCaughan and B. McKinnon and A. Mkrtchyan and H. Mkrtchyan and M. Muhoza and C. Muñoz Camacho and J. Murphy and P. Nadel-Turonski and S. Niccolai and G. Niculescu and R. Novotny and R. Paremuzyan and I. Pegg and K. Price and H. Rashad and J. Roche and R. Rondon and B. Sawatzky and V. Sergeyeva and S. Širca and A. Somov and I. Strakovsky and V. Tadevosyan and R. Trotta and H. Voskanyan and E. Voutier and B. Wojtsekhowski and S. Wood and S. Zhamkochyan and J. Zhang and S. Zhao and C. Zorn},
journal= {arXiv preprint arXiv:2105.06540},
year = {2022}
}