论文标题
在$ \ sqrt {s} = 200 $ gev的质子 - 普罗顿碰撞中的中央独家生产中心的粒子对与RHIC的星形检测器一起
Central exclusive production of charged particle pairs in proton-proton collisions at $\sqrt{s}=200$ GeV with the STAR detector at RHIC
论文作者
论文摘要
报道了RHIC的Star实验的中央独家生产$ H^{+} H^{ - } $（$ H =π，K，P $）的测量。本研究使用了$ \ sqrt {s} = 200 $ GEV的Proton-Proton碰撞的数据。反应$ pp \ to p^\ prime+h^{+} h^{ - }+p^\ prime $在反应$ pp \ to $ pp \ to pp \ prime+h^{ - }+prime $中产生的成对的双重had子是从中央检测器中的轨道重建，而在罗马锅系统中测量了前向质子。通过实验设置的几何接受确定的基准区域中测量差异截面。将它们与基于双波梅隆交换模型的现象学预测进行了比较。基金会$π^+π^ - $横截面被外推到Lorentz-Invariant区域，该区域允许将不变的质谱分解为连续性和共振贡献。
The measurement of the central exclusive production of charged hadron pairs $h^{+}h^{-}$ ($h = π, K, p$) by the STAR experiment at RHIC is reported. The data from proton-proton collisions at $\sqrt{s} = 200$ GeV were used in this study. The pairs of charged hadrons produced in the reaction $pp\to p^\prime+h^{+}h^{-}+p^\prime$ were reconstructed from the tracks in the central detector, while the forward-scattered protons were measured in the Roman Pot system. Differential cross sections were measured in the fiducial region determined by the geometrical acceptance of the experimental setup. They were compared to phenomenological predictions based on the Double Pomeron Exchange model. The fiducial $π^+π^-$ cross section was extrapolated to the Lorentz-invariant region, which allowed decomposition of the invariant mass spectrum into continuum and resonant contributions.
