Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei
Observation of large missing-momentum (e,e′p) cross-section scaling and the onset of correlated-pair dominance in nuclei
复制标题
观察大缺失动量 (e,e-p) 横截面缩放和原子核中相关对优势的开始
DOI：
10.1103/physrevc.107.l061301
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发表时间：
2023
影响因子：
3.1
通讯作者：
Hen, O.
中科院分区：
文献类型：
--
作者：
Korover, I.;Denniston, A. W.;Kiral, A.;Schmidt, A.;Lovato, A.;Rocco, N.;Nikolakopoulos, A.;Weinstein, L. B.;Piasetzky, E.;Hen, O.
我们报告了在大缺失动量下原子核相对于氘的横截面比例缩放的测量。观察到的缩放范围延伸到 的运动学范围，该范围比之前观察到的包含横截面比的范围要宽得多。从核费米动量开始，积分截面比变得恒定（即比例）。与理论计算相比，我们发现与高缺失动量 () 的广义接触形式主义计算有很好的一致性，这表明观察到的缩放结果来自与短程相关 (SRC) 对中的核子相互作用。对于低缺失动量，平均场计算显示出与数据的良好一致性，并表明从单个不相关的核子的散射到测量的横截面比的潜在不可忽略的贡献。因此，SRC 在远高于核费米面的原子核中占主导地位。
We report the measurement ofscaling incross-section ratios off nuclei relative to deuterium at large missing momentum of. The observed scaling extends over a kinematic range of, which is significantly wider thanpreviously observed for inclusivecross-section ratios. The-integrated cross-section ratios become constant (i.e., scale) beginning at, the nuclear Fermi momentum. Comparing with theoretical calculations we find good agreement with generalized contact formalism calculations for high missing momentum (), suggesting the observed scaling results from interacting with nucleons in short-range correlated (SRC) pairs. For low missing momenta, mean-field calculations show good agreement with the data for, and suggest a potential non-negligible contribution to the measured cross-section ratios from scattering off single, uncorrelated, nucleons up to. Therefore, SRCs become dominant in nuclei at, well above the nuclear Fermi Surface of.