Few-nucleon systems interacting via non-local quark-model baryon-baryon interaction

10th International Conference on Clustering Aspects of Nuclear Structure and Dynamics

Fujiwara, Y.^1 ; Fukukawa, K.^2

Department of Physics, Kyoto University, Kyoto 606-8502, Japan^1

RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan^2

关键词: Baryon-baryon interactions;    Differential cross section;    Few-nucleon systems;    Kinematical configurations;    Low energy regions;    Non-local interactions;    Nucleon-nucleon interaction;    Scattering length;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/436/1/012081/pdf
DOI  :  10.1088/1742-6596/436/1/012081

来源: IOP

【 摘 要 】

Low- and medium-energy nucleon-deuteron scattering less than the incident energy 65 MeV per nucleon is examined by using the quark-model nucleon-nucleon interaction fss2. The off-shell effect of this non-local interaction yields a part of the attractive effect given by the three-nucleon force in the standard description by meson-exchange potentials. The triton binding energy and the spin-doublet scattering length are well described by fss2 without introducing the three-nucleon force. The nucleon analyzing power is slightly improved from the results by the AV18 potential, but the so-called Aypuzzle in the low-energy region still remains. Similar reduction of the peak heights by the Coulomb force is also seen in the vector analyzing power of the deuteron, iT11(θ). Other observables are rather similar to the predictions by meson-exchange potentials, including discrepancies of deuteron breakup differential cross sections from experiment for some particular kinematical configurations. The systematic KVI data of the1H(d→, 2p)n scattering at Ed= 130 MeV are reasonably reproduced for breakup differential cross sections and deuteron analyzing powers.