Strangeness production in proton-lead collisions with ALICE at the Large Hadron Collider (LHC)

大型强子对撞机 (LHC) 中质子-铅与 ALICE 碰撞产生的奇异现象

• 批准号: 1843572
• 金额: --
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1843572
• 关键词: Strangeness; production; proton; lead; collisions

My research is on the quark-gluon plasma. This is a state of matter in which the quarks and gluons become deconfined which only occurs at extreme temperatures and densities. These conditions are created in heavy-ion collisions at the LHC and are analysed using data taken by the ALICE experiment. By investigating the quark-gluon plasma we can get a better theoretical understanding of the strong force which is the force which usually confines quarks within hadrons. I look at one of the signatures of quark-gluon plasma formation called strangeness enhancement which was seen in the initial data from ALICE in lead-lead collisions as expected. However, we also found evidence of strangeness enhancement in some proton-proton and proton-lead collisions which was surprising as a quark-gluon plasma is not expected to form in these conditions. My research is looking at the latest proton-lead data taken at higher energies to investigate this phenomenon further.

我的研究是关于夸克胶子等离子体。这是一种物质状态，其中夸克和胶子变得非受限，仅在极端温度和密度下发生。这些条件是在LHC的重离子碰撞中产生的，并使用ALICE实验获得的数据进行分析。通过研究夸克胶子等离子体，我们可以从理论上更好地理解通常将夸克限制在强子中的强力。我研究了夸克-胶子等离子体形成的一个特征，称为奇异增强，正如预期的那样，这在ALICE的铅-铅碰撞的初始数据中看到。然而，我们也发现了一些质子-质子和质子-铅碰撞中奇异增强的证据，这是令人惊讶的，因为夸克-胶子等离子体预计不会在这些条件下形成。我的研究正在研究在更高能量下获得的最新质子-铅数据，以进一步研究这种现象。