欧洲核子研究组织(CERN)大型强子对撞机的研究团队发现了一个重要现象:高速运动的夸克穿过原始夸克-胶子等离子体时会产生涟漪和漩涡,其行为就如同鸭子在水中划行一样1。这项发现提供了首次直接证据,表明夸克-胶子等离子体像真实液体一样对能量粒子产生响应,而不是作为独立散射粒子的集合1。
研究团队在13亿次碰撞中识别出约2000个Z玻色子产生的事件1,并使用CMS(紧凑μ子线圈)探测器来识别夸克尾迹1。MIT物理学教授Yen-Jie Lee表示:"现在我们看到等离子体密度非常大,能够减速夸克,并产生溅射和漩涡,如同液体。所以夸克-胶子等离子体确实是原始汤。"1原始夸克-胶子等离子体被认为是宇宙中第一种液体,温度达到数万亿度摄氏度1。研究成果已发表于《物理学快报B》期刊1。
Researchers at CERN's Large Hadron Collider have discovered direct evidence that quarks moving at high speeds generate ripples and swirls as they traverse the primordial quark-gluon plasma, much like a duck gliding through water.1 This finding marks the first time scientists have demonstrated that the quark-gluon plasma responds to energetic particles as a genuine liquid rather than simply scattering them as independent particles.1
The research team identified approximately 2,000 events producing Z bosons from 1.3 billion collisions, utilizing the CMS (Compact Muon Solenoid) detector to trace the paths of quarks through the plasma.1 According to MIT physics professor Yen-Jie Lee, "We now see that the plasma density is extremely high, capable of slowing down quarks and creating splashes and vortices, just like a liquid. So the quark-gluon plasma is indeed the primordial soup."1 The primordial quark-gluon plasma is theorized to be the first liquid in the universe, reaching temperatures of trillions of degrees Celsius.1 The findings have been published in Physics Letters B.1
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