Investigation of open- and hidden-strangeness Baryons with the BGO-OD Experiment at ELSA

通过 ELSA 的 BGO-OD 实验研究开放和隐藏的奇异重子

• 批准号: 388979758
• 负责人: Professor Dr. Hartmut Schmieden
• 金额: --
• 依托单位: Physikalisches Institut
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/388979758?language=en
• 关键词: Investigation; open; hidden; strangeness; Baryons

The goal of the project is to investigate the formation and decay of baryonic states of possible multi-quark structure beyond minimal 3-quark configurations. Such meson-meson or meson-baryon type structures offer interpretations for recent findings in the (hidden) charm sector, both mesons (the X,Y,Z states) and baryons (the LHCb pentaquark candidates). Similar states may exist in the open or hidden strange sector as well, and are expected at thresholds in the photoproduction of strange mesons. At the particularly interesting threshold regions of kaon-nucleon and kaon*-Sigma/Lambda, photoproduction of K+ and K0 mesons off proton and neutron will be studied using the BGO-OD detector at the ELSA facility of Bonn University. The acceptance of this detector offers access to previously unexplored kinematic regimes.

该项目的目标是研究超过最小3夸克组态的可能多夸克结构的重子态的形成和衰变。这种介子-介子或介子-重子类型的结构为最近在（隐藏的）魅力部门的发现提供了解释，包括介子（X，Y，Z状态）和重子（LHCb五夸克候选者）。类似的状态也可能存在于开放或隐藏的奇异扇区中，并且在奇异介子的光生过程中处于阈值。利用波恩大学艾尔莎实验室的BGO-OD探测器，在K介子-核子和K ~*-σ/λ的阈值区，研究质子和中子光生K ~+和K ~ 0介子的过程。接受这个探测器提供了以前未探索的运动机制。