论文标题
$^{12} $ c（e，e'pn）在张量之间的短距离相关性的测量值
$^{12}$C(e,e'pN) Measurements of Short Range Correlations in the Tensor-to-Scalar Interaction Transition Region
论文作者
论文摘要
High-momentum configurations of nucleon pairs at short-distance are probed using measurements of the $^{12}$C$(e,e'p)$ and $^{12}$C$(e,e'pN)$ reactions (where $N$ is either $n$ or $p$), at high-$Q^2$ and $x_B>1.1$.数据跨越了300--1000 meV/c的缺失摩托车范围，并且主要对从张量到标量相互作用的强核相互作用的过渡区域敏感。使用通用的接触形式和手性和现象学核定核子（$ nn $）相互作用模型，通过理论计算很好地复制了数据。该协议表明，测得的高度缺失巨质质子高达$ 1000 $ MEV/c，主要属于短距离相关（SRC）对。测量的$^{12} $ c $（e，e'pn）$ / $^{12} $ c $（e，e'p）$和$^{12} $ c $（e，e'pp）$ / $^{12} $ c $（e，e'pn）$跨截面比率一致Proton-Proton SRC与缺失动量增加。这证实了从$ \ sim 400 $ meV/c的ISOSPIN依赖性张量$ nn $相互作用的过渡到$ \ sim 800 $ MEV/c，如理论计算所预测的。
High-momentum configurations of nucleon pairs at short-distance are probed using measurements of the $^{12}$C$(e,e'p)$ and $^{12}$C$(e,e'pN)$ reactions (where $N$ is either $n$ or $p$), at high-$Q^2$ and $x_B>1.1$. 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 $^{12}$C$(e,e'pN)$ / $^{12}$C$(e,e'p)$ and $^{12}$C$(e,e'pp)$ / $^{12}$C$(e,e'pn)$ 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 $\sim 400$ MeV/c to an isospin-independent scalar interaction at high-momentum around $\sim 800$ MeV/c as predicted by theoretical calculation.
