학술논문
12C(e,e'pN) measurements of short range correlations in the tensor-to-scalar interaction transition region
Document Type
article
Author
I. Korover; J.R. Pybus; A. Schmidt; F. Hauenstein; M. Duer; O. Hen; E. Piasetzky; L.B. Weinstein; D.W. Higinbotham; S. Adhikari; K. Adhikari; M.J. Amaryan; Giovanni Angelini; H. Atac; L. Barion; M. Battaglieri; A. Beck; I. Bedlinskiy; Fatiha Benmokhtar; A. Bianconi; A.S. Biselli; S. Boiarinov; W.J. Briscoe; W.K. Brooks; D. Bulumulla; V.D. Burkert; D.S. Carman; A. Celentano; P. Chatagnon; T. Chetry; L. Clark; B. Clary; P.L. Cole; M. Contalbrigo; V. Crede; R. Cruz-Torres; A. D'Angelo; R. De Vita; M. Defurne; A. Denniston; A. Deur; S. Diehl; C. Djalali; R. Dupre; H. Egiyan; M. Ehrhart; A. El Alaoui; L. El Fassi; L. Elouadrhiri; P. Eugenio; R. Fersch; A. Filippi; T. Forest; G. Gavalian; F.X. Girod; E. Golovatch; R.W. Gothe; K.A. Griffioen; M. Guidal; K. Hafidi; H. Hakobyan; N. Harrison; M. Hattawy; T.B. Hayward; D. Heddle; K. Hicks; M. Holtrop; Y. Ilieva; D.G. Ireland; E.L. Isupov; D. Jenkins; H.S. Jo; K. Joo; S. Joosten; D. Keller; M. Khachatryan; A. Khanal; M. Khandaker; A. Kim; C.W. Kim; F.J. Klein; V. Kubarovsky; L. Lanza; M. Leali; P. Lenisa; K. Livingston; V. Lucherini; I.J.D. MacGregor; D. Marchand; N. Markov; L. Marsicano; V. Mascagna; B. McKinnon; S. Mey-Tal Beck; T. Mineeva; M. Mirazita; A. Movsisyan; C. Munoz Camacho; B. Mustapha; P. Nadel-Turonski; K. Neupane; G. Niculescu; M. Osipenko; A.I. Ostrovidov; M. Paolone; L.L. Pappalardo; R. Paremuzyan; E. Pasyuk; W. Phelps; O. Pogorelko; J.W. Price; Y. Prok; D. Protopopescu; B.A. Raue; M. Ripani; J. Ritman; A. Rizzo; G. Rosner; J. Rowley; F. Sabatié; C. Salgado; R.A. Schumacher; E.P. Segarra; Y.G. Sharabian; U. Shrestha; D. Sokhan; O. Soto; N. Sparveris; S. Stepanyan; I.I. Strakovsky; S. Strauch; J.A. Tan; N. Tyler; M. Ungaro; L. Venturelli; H. Voskanyan; E. Voutier; T. Wang; D. Watts; X. Wei; M.H. Wood; N. Zachariou; J. Zhang; Z.W. Zhao; X. Zheng
Source
Physics Letters B, Vol 820, Iss , Pp 136523- (2021)
Subject
Language
English
ISSN
0370-2693
Abstract
High-momentum configurations of nucleon pairs at short-distance are probed using measurements of the 12C(e,e′p) and 12C(e,e′pN) reactions (where N is either n or p), at high-Q2 and xB>1.1. The data span a missing-momentum range of 300–1000 MeV/c and are predominantly sensitive to the transition region of the strong nuclear interaction from a Tensor to Scalar interaction. The data are well reproduced by theoretical calculations using the Generalized Contact Formalism with both chiral and phenomenological nucleon-nucleon (NN) interaction models. This agreement suggests that the measured high missing-momentum protons up to 1000 MeV/c predominantly belong to short-ranged correlated (SRC) pairs. The measured 12C(e,e′pN) / 12C(e,e′p) and 12C(e,e′pp) / 12C(e,e′pn) cross-section ratios are consistent with a decrease in the fraction of proton-neutron SRC pairs and increase in the fraction of proton-proton SRC pairs with increasing missing momentum. This confirms the transition from an isospin-dependent tensor NN interaction at ∼400 MeV/c to an isospin-independent scalar interaction at high-momentum around ∼800 MeV/c as predicted by theoretical calculation.