Münster 2017 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 27: Poster
HK 27.77: Poster
Tuesday, March 28, 2017, 16:45–18:45, F Foyer
Forward Detector for physics at FAIR with HADES — •Rafal Lalik for the HADES collaboration — Technische Universität München, Excellence Cluster Universe
The Forward Detector is an upcoming upgrade of the HADES spectrometer meant to enhance its geometrical acceptance for experiments with higher energies as planned at the upcoming FAIR facility. It contains three new detector systems: straws tubes for tracking particles, a RPC and a Forward Wall for measuring the time of flight.
The Forward Detector will allow HADES to extend the angular acceptance of the spectrometer into very forward direction, from 0∘ to 7∘ in the polar angle. It will play a leading role in the identification of decays of
highly anisotropic resonances, providing signal statistics higher by factor of a few in respect to the original HADES geometry.
Together with future Electromagnetic Calorimeter, it will open possibility to measure for the first time hyperons radiative decays branching ratios, specifically Λ(1405)→Λγ and Λ(1405)→Σ0γ, which are unknown.
The Branching ratios according Kaxiras et al (PRD32), will allow to determine the internal structure of Λ(1405) resonance, which is heavily discussed either as a two pole KN-Σπ resonance or penta-quark.
With the increased acceptance HADES will be able to measure the production of Ξ in proton-proton reactions. These measurements are a crucial reference to understand the production of Ξ in heavier system at HADES, which showed
enhancement of this baryon in sub-threshold range, an effect which is not explainable by any of the existing transport models.
* This work is supported by BMBF 05P15WOFCA.