标题： 重介子在质子-原子核反应中的产生：经验谱函数方法 显示英文标题

标题： Heavy Meson Production in Proton-Nucleus Reactions with Empirical Spectral Functions

摘要： 我们基于经验谱函数研究了在$p + ^{12}C$反应中$K^+, \rho, \omega$和$\phi$介子的产生。发现谱函数在高动量、高去除能部分在接近绝对阈值的所有情况下都可忽略不计。此外，与基于折叠模型的早期计算结果一致，在阈值能量下两步过程（$pN \rightarrow \pi N N; \pi N \rightarrow N + K^+, \rho, \omega, \phi$）主导了截面。 显示英文摘要

摘要： We study the production of $K^+, \rho, \omega$ and $\phi$ mesons in $p + ^{12}C$ reactions on the basis of empirical spectral functions. The high momentum, high removal energy part of the spectral function is found to be negligible in all cases close to the absolute threshold. Furthermore, the two-step process ($pN \rightarrow \pi N N; \pi N \rightarrow N + K^+, \rho, \omega, \phi$) dominates the cross section at threshold energies in line with earlier calculations based on the folding model.