• Medientyp: E-Artikel
  • Titel: 12C(e,e'pN) measurements of short range correlations in the tensor-to-scalar interaction transition region
  • Beteiligte: Korover, I. [Verfasser:in]; Pybus, J. R. [Verfasser:in]; Adhikari, K. [Verfasser:in]; Neupane, K. [Verfasser:in]; Niculescu, G. [Verfasser:in]; Osipenko, M. [Verfasser:in]; Ostrovidov, A. I. [Verfasser:in]; Paolone, M. [Verfasser:in]; Pappalardo, L. L. [Verfasser:in]; Paremuzyan, R. [Verfasser:in]; Pasyuk, E. [Verfasser:in]; Phelps, W. [Verfasser:in]; Pogorelko, O. [Verfasser:in]; Amaryan, M. J. [Verfasser:in]; Price, J. W. [Verfasser:in]; Prok, Y. [Verfasser:in]; Protopopescu, D. [Verfasser:in]; Raue, B. A. [Verfasser:in]; Ripani, M. [Verfasser:in]; Ritman, J. [Verfasser:in]; Rizzo, A. [Verfasser:in]; Rosner, G. [Verfasser:in]; Rowley, J. [Verfasser:in]; Sabatié, F. [Verfasser:in]; [...]
  • Erschienen: North-Holland Publ., 2021
  • Erschienen in: Physics letters / B 820, 136523 - (2021). doi:10.1016/j.physletb.2021.136523
  • Sprache: Englisch
  • DOI: https://doi.org/10.1016/j.physletb.2021.136523
  • ISSN: 0370-2693; 1873-2445
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  • Beschreibung: High-momentum configurations of nucleon pairs at short-distance are probed using measurements of the 12C and 12C reactions (where N is either n or p), at high- and . 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 / 12C and 12C / 12C 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.
  • Zugangsstatus: Freier Zugang