Erlangen 2026 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 11: Hadron Structure and Spectroscopy III
HK 11.2: Gruppenbericht
Dienstag, 17. März 2026, 16:45–17:15, PHIL C 301
The study of unconventional baryon structure in the light quark sector with the BGOOD and INSIGHT experiments — •Thomas Jude for the BGOOD collaboration — Physikalisches Institut, Universität Bonn
The existence of exotic multi-quark states beyond valence three quark and quark-antiquark systems has been unambiguously confirmed in the heavy quark sectors and equivalent structures may be evidenced in the light, uds sector. The BGOOD photoproduction experiment at ELSA is ideal to study spatially extended, molecular-like structure which may manifest in reaction mechanisms. BGOOD is comprised of a central calorimeter for neutral meson momentum reconstruction and complemented by a magnetic spectrometer in forward directions for charged particle identification.
Our published results in the strangeness sector suggest a dominant role of meson-baryon dynamics which may have an equivalence to the PC states in the charmed sector. This includes structure in K0Σ0 and K+Σ+ photoproduction at the K*Y thresholds.
The new INSIGHT experiment at ELSA will be an important upgrade for both the BGOOD and CBELSA/TAPS experiments and will feature a unique combination of almost complete angular coverage for high-resolution photon identification and charged-particle detection with polarised beams and targets.
I will present BGOOD results and anticipated INSIGHT measurements using simulated data.
Keywords: BGOOD; INSIGHT; Photoproduction; Strangeness