AI 中文总结
研究$^{12}$C(d,p)X反应在小质子发射角下包容性氘核破裂不变截面的库仑修正，扩展相关分析并纳入多种相互作用，推导库仑相位等，计算表明库仑效应集中在准自由峰附近，无法解释特定能量处实验增强。
AI 中文摘要
在Glauber-Sitenko衍射多重散射理论中，我们计算了$^{12}$C(d,p)X反应在小质子发射角下包容性氘核破裂不变截面的库仑修正。扩展之前对纵向动量转移$Q_z$和最终$pn$对横向相对动量的分析，纳入质子-核电磁相互作用、库仑-核干涉以及对双$pn$再散射的库仑修正。对于有限核电荷分布，推导出库仑相位并将其空间尺度与测量的电荷半径相关联。得到质子库仑项的封闭和汤川屏蔽表达式。将对$pn$再散射的二维修正简化为一维积分，无需对完整跃迁形状因子进行独立高斯近似。用K2和Nijm-I氘核波函数的S波分量计算表明，库仑效应集中在准自由峰附近。其与强振幅的干涉增加了峰高，但随相对动量迅速减小。因此无法解释0.3-0.5 GeV/$c$处的实验增强，此处末态相互作用、相对论修正和非核子成分可能很重要。
英文摘要
Within the Glauber-Sitenko diffraction multiple-scattering theory, we calculate Coulomb corrections to the invariant cross section for inclusive deuteron breakup in the $^{12}$C(d,p)X reaction at small proton emission angles. Extending our previous analysis of the longitudinal momentum transfer $Q_z$ and the transverse relative momentum of the final $pn$ pair, we include the proton--nucleus electromagnetic interaction, Coulomb-nuclear interference, and the Coulomb correction to double $pn$ rescattering. For a finite nuclear charge distribution, we derive the Coulomb phase and relate its spatial scale to the measured charge radius. Closed and Yukawa-screened expressions for the proton Coulomb term are obtained. The two-dimensional correction to $pn$ rescattering is reduced to a one-dimensional integral without an independent Gaussian approximation to the full transition form factor. Calculations with the $S$-wave components of the K2 and Nijm-I deuteron wave functions show that the Coulomb effect is concentrated near the quasifree peak. Its interference with the strong amplitude increases the peak height but decreases rapidly with relative momentum. It therefore cannot explain the experimental enhancement at $0.3$--$0.5$ GeV/$c$, where final-state interactions, relativistic corrections, and nonnucleonic components may be important.
Comments29 pages, 2 tables, 1 figure with 2 panel. Contribution to the XXXIII Annual Scientific Conference of the Institute for Nuclear Research (Kyiv, Ukraine, May 25--29, 2026)
