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A unified description of the reaction dynamics from pp to pA to AA collisions

机译:从pp到pA到AA碰撞的反应动力学的统一描述

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摘要

There is little doubt that in heavy ion collisions at the LHC and RHIC, we observe a hydrodynamically expanding system, providing strong evidence for the formation of a Quark Gluon Plasma (QGP) in the early stage of such collisions. These observations are mainly based on results on azimuthal anisotropies, but also on particle spectra of identified particles, perfectly compatible with a hydrodynamic evolution. Surprisingly, in p-Pb collisions one observes a very similar behavior, and to some extent even in p-p. We take these experimental observations as a strong support for a unified approach to describe proton proton (p-p), proton nucleus (p-A), and nucleus nucleus (A-A) collisons, with a plasma formation even in tiny systems as in p-p scatterings. (C) 2014 Elsevier B.V. All rights reserved.
机译:毫无疑问,在LHC和RHIC发生重离子碰撞时,我们观察到了流体动力学扩展系统,为此类碰撞早期形成夸克胶子等离子体(QGP)提供了有力的证据。这些观察结果主要基于方位各向异性的结果,但也基于与流体动力学演化完全兼容的已识别颗粒的颗粒光谱。令人惊讶的是,在p-Pb碰撞中,人们观察到非常相似的行为,甚至在一定程度上甚至在p-p中也观察到。我们将这些实验观察结果作为对描述质子质子(p-p),质子核(p-A)和核核(A-A)碰撞的统一方法的有力支持,即使在很小的系统中(如p-p散射)也具有等离子体形成。 (C)2014 Elsevier B.V.保留所有权利。

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