标题： $K_S^0$在 31、40 和 80 GeV/c 束流动量下通过 NA61/SHINE 在 CERN SPS 测量的非弹性 p+p 相互作用中的介子产生 显示英文标题

标题： $K_S^0$ meson production in inelastic p+p interactions at 31, 40 and 80 GeV/c beam momentum measured by NA61/SHINE at the CERN SPS

摘要： $K_S^0$介子通过其$\pi^{+} \pi^{-}$衰变模式在非弹性$\textit{p+p}$相互作用中，入射质子动量为 31、40 和 80 GeV/$c$（分别为$\sqrt{s_{NN}}=7.7, 8.8$和$12.3$GeV）的测量结果如下。数据由 CERN 的 NA61/SHINE 光谱仪记录。获得了横向动量和快度的双微分分布。 $K_S^0$介子的平均多重性被确定为 31 GeV/$c$时为$(5.95 \pm 0.19 (stat) \pm 0.22 (sys)) \times 10^{-2}$，40 GeV/$c$时为$(7.61 \pm 0.13 (stat) \pm 0.31 (sys)) \times 10^{-2}$，80 GeV/$c$时为$(11.58 \pm 0.12 (stat) \pm 0.37 (sys)) \times 10^{-2}$。 $K^{0}_{S}$产生的结果与模型计算（Epos1.99，SMASH 2.0 和 PHSD）以及其它实验的已发表数据进行了比较。 显示英文摘要

摘要： Measurements of $K_S^0$ meson production via its $\pi^{+} \pi^{-}$ decay mode in inelastic $\textit{p+p}$ interactions at incident projectile momenta of 31, 40 and 80 GeV/$c$ ($\sqrt{s_{NN}}=7.7, 8.8$ and $12.3$ GeV, respectively) are presented. The data were recorded by the NA61/SHINE spectrometer at the CERN Super Proton Synchrotron. Double-differential distributions were obtained in transverse momentum and rapidity. The mean multiplicities of $K_S^0$ mesons were determined to be $(5.95 \pm 0.19 (stat) \pm 0.22 (sys)) \times 10^{-2}$ at 31 GeV/$c$, $(7.61 \pm 0.13 (stat) \pm 0.31 (sys)) \times 10^{-2}$ at 40 GeV/$c$ and $(11.58 \pm 0.12 (stat) \pm 0.37 (sys)) \times 10^{-2}$ at 80 GeV/$c$. The results on $K^{0}_{S}$ production are compared with model calculations (Epos1.99, SMASH 2.0 and PHSD) as well as with published data from other experiments.