1. First Measurement of Deeply Virtual Compton Scattering on the Neutron with Detection of the Active Neutron.
- Author
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Hobart A, Niccolai S, Čuić M, Kumerički K, Achenbach P, Alvarado JS, Armstrong WR, Atac H, Avakian H, Baashen L, Baltzell NA, Barion L, Bashkanov M, Battaglieri M, Benkel B, Benmokhtar F, Bianconi A, Biselli AS, Boiarinov S, Bondi M, Booth WA, Bossù F, Brinkmann KT, Briscoe WJ, Brooks WK, Bueltmann S, Burkert VD, Cao T, Capobianco R, Carman DS, Chatagnon P, Ciullo G, Cole PL, Contalbrigo M, D'Angelo A, Dashyan N, De Vita R, Defurne M, Deur A, Diehl S, Dilks C, Djalali C, Dupre R, Egiyan H, Alaoui AE, Fassi LE, Elouadrhiri L, Fegan S, Filippi A, Fogler C, Gates K, Gavalian G, Gilfoyle GP, Glazier D, Gothe RW, Gotra Y, Guidal M, Hafidi K, Hakobyan H, Hattawy M, Hauenstein F, Heddle D, Holtrop M, Ilieva Y, Ireland DG, Isupov EL, Jiang H, Jo HS, Joo K, Kageya T, Kim A, Kim W, Klimenko V, Kripko A, Kubarovsky V, Kuhn SE, Lanza L, Leali M, Lee S, Lenisa P, Li X, MacGregor IJD, Marchand D, Mascagna V, Maynes M, McKinnon B, Meziani ZE, Migliorati S, Milner RG, Mineeva T, Mirazita M, Mokeev V, Camacho CM, Nadel-Turonski P, Naidoo P, Neupane K, Niculescu G, Osipenko M, Pandey P, Paolone M, Pappalardo LL, Paremuzyan R, Pasyuk E, Paul SJ, Phelps W, Pilleux N, Pokhrel M, Rafael SP, Poudel J, Price JW, Prok Y, Reed T, Richards J, Ripani M, Ritman J, Rossi P, Golubenko AA, Salgado C, Schadmand S, Schmidt A, Scott MBC, Seroka EM, Sharabian YG, Shirokov EV, Shrestha U, Sparveris N, Spreafico M, Stepanyan S, Strakovsky II, Strauch S, Tan JA, Trotta N, Tyson R, Ungaro M, Vallarino S, Venturelli L, Tommaso V, Voskanyan H, Voutier E, Watts DP, Wei X, Williams R, Wood MH, Xu L, Zachariou N, Zhang J, Zhao ZW, and Zurek M
- Abstract
Measuring deeply virtual Compton scattering (DVCS) on the neutron is one of the necessary steps to understand the structure of the nucleon in terms of generalized parton distributions (GPDs). Neutron targets play a complementary role to transversely polarized proton targets in the determination of the GPD E. This poorly known and poorly constrained GPD is essential to obtain the contribution of the quarks' angular momentum to the spin of the nucleon. DVCS on the neutron was measured for the first time selecting the exclusive final state by detecting the neutron, using the Jefferson Lab longitudinally polarized electron beam, with energies up to 10.6 GeV, and the CLAS12 detector. The extracted beam-spin asymmetries, combined with DVCS observables measured on the proton, allow a clean quark-flavor separation of the imaginary parts of the Compton form factors H and E.
- Published
- 2024
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