Properties of Hybrids from QCD Sum-Rules

QCD 求和规则的混合属性

• 批准号: SAPIN-2017-00036
• 负责人: Harnett, Derek
• 金额: $ 1.09万
• 依托单位: Fraser Valley
• 依托单位国家: 加拿大
• 项目类别: Subatomic Physics Envelope - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718092
• 关键词: Properties; Hybrids; QCD; Sum; Rules

The strong nuclear interaction is the force responsible for binding together protons and neutrons inside atomic nuclei, or, on a more fundamental level, it is the force responsible for binding quarks together inside the protons and neutrons themselves. Quantum chromodynamics is the theory that describes the strong nuclear interaction, and, in it, quarks interact with one another through the exchange of other particles called gluons. Interestingly enough, gluons can actually interact directly with quarks and other gluons through the same gluon exchange that mediates the strong force between quarks. In this way, quantum chromodynamics predicts that gluons can act as fundamental constituents inside bound states held together by the strong nuclear interaction. Hybrids are hypothesized bound states containing both quark and gluon constituents, and, despite more than four decades of searching by theoreticians and experimentalists alike, they have yet to be conclusively identified in experiment. Definitively labelling a particle a hybrid will require agreement between theory and experiment concerning a variety of particle properties. My research program is devoted to computing these properties on the theoretical side in order to guide experimental searches and to interpret the data obtained. Broadly speaking, my work is discovery research aimed at a better understanding of the strong nuclear interaction.

强核相互作用是负责将原子核内质子和中子结合在一起的力，或者在更基本的水平上，它是负责将夸克结合在一起的力量和中子本身。 量子染色体动力学是描述强核相互作用的理论，在其中，夸克通过交换其他称为胶子的颗粒相互作用。 有趣的是，胶子实际上可以通过介导夸克之间强力的相同的gluon交换直接与夸克和其他振动互动。 通过这种方式，量子染色体动力学预测，胶子可以充当强烈核相互作用结合在一起的结合状态内的基本成分。 杂种是假设的结合状态，其中既包含夸克和gluon成分，又有40多年的理论家和实验学家的搜索，但在实验中尚未确定它们。 明确标记粒子A杂种将需要理论与关于各种粒子特性的实验之间的一致。 我的研究计划致力于计算理论方面的这些属性，以指导实验搜索并解释获得的数据。 从广义上讲，我的工作是发现研究，旨在更好地了解强烈的核互动。