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HK: Fachverband Hadronen und Kerne
HK 13: Hadron Structure and Spectroscopy I
HK 13.1: Talk
Monday, March 16, 2009, 16:30–16:45, H-ZO 20
Hyperon reconstruction and analysis — •Roman Dzhygadlo1, Albrecht Gillitzer2, and Jim Ritman2 — 1Universität Bonn — 2Forschungszentrum Jülich
The hyperon excitation spectrum is still poorly known. This is particularly the case for the Ξ and the Ω spectrum. The knowledge on nucleon resonances is mainly based on the πΝ channel were as little is known on their coupling to ΛK or ΣK final states. In order to improve this situation, simulation and analysis studies were performed to reconstruct hyperons in the PANDA (Λ, Ξ) and in the COSY-TOF (Λ, Σ) experiments. In the simulations a Straw Tube Tracking (STT) subdetector was used. In the PANDA experiment a STT detector is the baseline option for the Central Tracker, the COSY-TOF experiment has recently been upgraded with a STT detector. The analysis for COSY-TOF was performed within the COSY-TOF simulation-analysis software, for PANDA the PANDAROOT framework was used. In both cases the hyperons were reconstructed with real track and vertex finders. The resulting hyperon invariant mass distribution and the obtained reconstruction efficiency will be shown. The achieved signal-to-background level for different background channels will be discussed.
Supported in part by Forschungszentrum Jülich