论文标题
$ e^+ e^ - 高parton密度$ e^+ e^的陌生性增强和类似流动的效果
Strangeness enhancement and flow-like effects in $e^+ e^-$ annihilation at high parton density
论文作者
论文摘要
奇怪的增强和集体流程被认为是夸克gluon血浆形成的特征。这些现象不仅在相对论的重离子碰撞中被检测到，而且在高能量，质子 - 普罗顿和质子 - 核（“小型系统”）散射的高能量事件中也被检测到。实际上，通过将横向平面中的Parton密度视为指定碰撞初始条件的动力学数量，出现了普遍的行为。另一方面，LEP和较低能量的$ e^+ e^ - $ nihihitation数据表明，没有奇怪的增强性，也没有流动效果。我们表明，以$ e^+ e^ - $ nihihation以可用能量的nih灭产生的横向平面中的Parton密度太低，无法期望这种效果。可以评估奇怪抑制和类似流动现象的事件多样性可以评估$ e^+ e^ - $。
Strangeness enhancement and collective flow are considered signatures of the quark gluon plasma formation. These phenomena have been detected not only in relativistic heavy ion collisions but also in high energy, high multiplicity events of proton-proton and proton-nucleus ("small systems") scatterings. Indeed, a universal behavior emerges by considering the parton density in the transverse plane as the dynamical quantity to specify the initial condition of the collisions. On the other hand, $e^+ e^-$ annihilation data at LEP and lower energies indicate that there is no strangeness enhancement and no flow-like effect. We show that the parton density in the transverse plane generated in $e^+ e^-$ annihilation at the available energy is too low to expect such effects. The event-by-event multiplicity where strangeness suppression and flow-like phenomenon could show up in $e^+ e^-$ is evaluated.
