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

该项目的目标是研究超过最小3夸克构型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-重子型结构为（隐藏的）粲子领域的最新发现提供了解释，包括介子（X、Y、Z态）和重子（LHCb五夸克候选者）。在开放的或隐藏的奇异扇区中也可能存在类似的状态，并且在奇异介子光产生的阈值处被期望存在。在特别有趣的kaon-nucleon和kaon*-Sigma/Lambda阈值区域，将使用波恩大学ELSA设施的BGO-OD探测器研究质子和中子的K+和K0介子的光产生。这种探测器的接受提供了访问以前未探索的运动制度。

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.