在GlueX搜索奇异强子

S. Dobbs
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引用次数: 3

摘要

寻找混合介子并详细研究其光谱是杰斐逊实验室D厅GlueX实验的主要目标。杂化介子的识别和研究有望为QCD中的胶子自由度和约束的本质提供独特的见解。该实验将一束线极化峰值约为9gev的强光子束用近密闭光谱仪照射在液氢靶上,对带电粒子和中性粒子的最终态进行了综合研究。实验的第一阶段最近已经结束,产生了前所未有的大小和质量的光制作数据集。我们报告了这些数据的分析现状,包括偏振观测值的测量,光介子的光谱测量的进展,以及$J/\psi$近阈值的光产生的测量,这为了解LHCb闭粲五夸克候选者的性质提供了关键的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Searches for exotic hadrons at GlueX
The search for hybrid mesons and the detailed study of their spectrum is the primary goal of the GlueX Experiment in Hall D at Jefferson Lab. The identification and study of hybrid mesons promises to provide unique insight into gluonic degrees of freedom in QCD and the nature of confinement. The experiment combines an intense photon beam with linear polarization peaking around 9 GeV incident on a liquid hydrogen target with a nearly hermetic spectrometer, allowing for the comprehensive study of charged and neutral particle final states. The first phase of the experiment has recently concluded, yielding a photoproduction data set of unprecedented size and quality. We report on the status of the analysis of this data, including measurements of polarization observables, progress in spectroscopic measurements of light mesons, and the measurement of the photoproduction of $J/\psi$ near threshold, which is providing critical insight into the nature of the LHCb closed-charm pentaquark candidates.
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