AI 中文总结
研究发现，将相对论运动学修正纳入绝热扭曲波近似方法，可使高动量核子转移反应的中子谱因子在宽能量范围内更一致，对准确提取核结构关键参数意义重大。
AI 中文摘要
由短程核子-核子关联主导的核波函数高动量分量（HMCs），为超越平均场图像的核结构提供了重要见解。高能（p, d）反应可探测这些HMCs，但当入射质子能量达到数百MeV时，其理论处理需考虑相对论修正。尽管相对论运动学修正（RKCs）的效应已在多种直接核反应中得到研究，但尚未在核子转移反应中被系统探讨。本文通过在零动量框架中重新定义粒子质量，将RKCs纳入（p, d）反应的绝热扭曲波近似（ADWA）方法。该方法利用狄拉克全局光学模型势，通过135至800 MeV能量范围内16O的质子弹性散射数据进行验证，随后应用于入射能量约50至800 MeV下12C、16O和40Ca的（p, d）反应。结果显示，RKCs得到的中子谱因子在整个能量范围内的一致性显著优于非相对论计算的结果，非相对论计算会系统高估高入射能量下的谱因子。本分析表明，相对论运动学修正对于可靠提取谱因子及准确描述高动量核子转移反应数据具有根本重要性。
英文摘要
High-momentum components (HMCs) of nuclear wave functions, governed by short-range nucleon-nucleon correlations, provide essential insights into nuclear structure beyond the mean-field picture. High-energy (p, d) reactions offer access to these HMCs, but their theoretical treatment requires relativistic corrections when incident proton energies reach several hundred MeV. Although effects of relativistic kinematic corrections (RKCs) have been studied in several types of direct nuclear reactions, it has not been systematically studied in nucleon transfer reactions. Here, RKCs are incorporated into the adiabatic distorted wave approximation (ADWA) for (p, d) reactions by redefining particle masses in the zero-momentum frame. The approach is validated against proton elastic scattering data on 16O from 135 to 800 MeV using Dirac global optical model potentials, and then applied to (p,d) reactions on 12C, 16O, and 40Ca at incident energies from approximately 50 to 800 MeV. The RKCs yield neutron spectroscopic factors that are significantly more consistent across the entire energy range than those obtained from non-relativistic calculations, which systematically overestimate spectroscopic factors obtained at high incident energies. The present analysis demonstrates that relativistic kinematic corrections are of fundamental importance for the reliable extraction of spectroscopic factors and the accurate description of high-momentum nucleon-transfer reaction data.
