论文标题
在大型强子对撞机处可用的能量时，抗iduteron数量波动的首次测量
First measurement of antideuteron number fluctuations at energies available at the Large Hadron Collider
论文作者
论文摘要
提出了高能重型离子碰撞中逐个事件的抗抗抑素数量波动的首次测量。测量值是在中间差异（$ |η| <0.8 $）上进行的，这是Pb $ - $ PB碰撞碰撞中心的函数，$ \ sqrt {s _ {\ rm nn}} = 5.02 $ tev使用Alice检测器。在所有碰撞中心都观察到产生的抗蛋白酶和抗思想龙之间存在显着的负相关。将结果与最先进的结合计算进行了比较。虽然它描述了抗抑郁多重性分布的高阶累积量的比例，但它无法定量地描述抗蛋白酶与抗tideuteron产生之间相关性的大小。另一方面，热统计模型计算描述了不确定性中的所有可观察到的相关量，这些相关量与描述质子产量的人不同，并且对Net-Proton数量波动的测量相似。
The first measurement of event-by-event antideuteron number fluctuations in high energy heavy-ion collisions is presented. The measurements are carried out at midrapidity ($|η| < 0.8$) as a function of collision centrality in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV using the ALICE detector. A significant negative correlation between the produced antiprotons and antideuterons is observed in all collision centralities. The results are compared with a state-of-the-art coalescence calculation. While it describes the ratio of higher order cumulants of the antideuteron multiplicity distribution, it fails to describe quantitatively the magnitude of the correlation between antiproton and antideuteron production. On the other hand, thermal-statistical model calculations describe all the measured observables within uncertainties only for correlation volumes that are different with respect to those describing proton yields and a similar measurement of net-proton number fluctuations.
