论文标题
$π^+π^ - $，$ k^+k^ - $和$ p \ bar {p} $ proton-proton碰撞的$ k^+k^ - $ k^+k^ - $ k^+k^ - $ \ sqrt {s} = 510 $ GEV的研究
Study of the central exclusive production of $π^+π^-$, $K^+K^-$ and $p \bar{p}$ pairs in proton-proton collisions at $\sqrt{s} = 510$ GeV with the STAR detector at RHIC
论文作者
论文摘要
我们报告了中央独家生产过程的测量$ pp \ \ rightarrow \ rightarrow \ pxp $在RHIC的Proton-Proton碰撞中，Star检测器在$ \ sqrt {\ Mathrm {s}}} = 510 $ GEV。在这种能量下，此过程由双波美龙交换机制主导。中央生产的系统$ x $的轨道是在Star的中央检测器，时间投影室和飞行系统时间重建的，并使用电离能量损失和飞行方法进行了识别。在碰撞后，在rhic束管内部移动的衍射质子，在罗马盆系统中测量，可以完全控制相互作用的运动学并验证其排他性。出现了在星星接受度中测得的中心产生的$π^+π^ - $，$ k^+ k^ - $和$ k^+ k^ - $，$ k^+ k^ - $，$ k^+ k^ - $的初步结果。
We report on the measurement of the central exclusive production process $pp \ \rightarrow \ pXp$ in proton-proton collisions at RHIC with the STAR detector at $\sqrt{\mathrm{s}} = 510$ GeV. At this energy, this process is dominated by a double Pomeron exchange mechanism. The tracks of the centrally produced system $X$ were reconstructed in the central detector of STAR, the Time Projection Chamber and the Time of Flight systems, and were identified using the ionization energy loss and the time of flight method. The diffractively scattered protons, moving intact inside the RHIC beam pipe after the collision, were measured in the Roman Pots system allowing full control of the interaction's kinematics and verification of its exclusivity. The preliminary results on the invariant mass distributions of centrally produced $π^+ π^-$, $K^+ K^-$ and $p \bar{p}$ pairs measured within the STAR acceptance are presented.
