Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 8: Hadronenstruktur und -spektroskopie

HK 8.4: Vortrag

Montag, 19. März 2012, 17:30–17:45, RW 1

Search for Resonances in the Diffractively Produced 5 Pion System at COMPASS — •Sebastian Neubert — Technische Universität München

COMPASS is a multi-purpose fixed-target experiment at the CERN SPS, which investigates the structure and spectroscopy of hadrons. Diffractive dissociation of pions on nuclear and liquid hydrogen targets provides clean access to light meson resonances. Owing to the large acceptance and high resolution, COMPASS can measure exclusive multi-particle final states containing both neutral and charged particles with unprecedented accuracy. Events with 5 charged pions in the final state populate the mass region around and beyond 2 GeV/c², where many interesting candidates for mesonic resonances have been discussed in the past, but still need further experimental investigation. In this talk, we will report on the progress of the development of a partial wave analysis for this complex final state and discuss first results.