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Münster 2011 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 12: Hadronenstruktur und -spektroskopie IV

HK 12.6: Talk

Monday, March 21, 2011, 18:00–18:15, HS3

Analysis of diffractive dissociation of exclusive K π+ π events in the high energetic hadron beam of the COMPASS-experiment — •Prometeusz Jasinski — Institut für Kernphysik, Universität Mainz, Johann-Joachim-Becherweg 45, 55099 Mainz

In order to study the production of exotic mesons the COMPASS experiment at CERN took data with a 190 GeV/c hadron beam hitting a liquid hydrogen target in the years 2008 and 2009. The negative hadron beam contains mainly pions and a small fraction of about 2.5% of kaons. Kaons are identified using CEDAR PID detectros in the beamline. One of the channels of interest is diffractively produced resonance decaying into the K π+ π final state. I will discuss the data selection and quality studies for this channel. The invariant mass spectra show already the well known resonances as the K1(1270) K1(1400) and the K2(1770). To disentangle all contributing resonances techniques of partial wave analysis are applied. A short review on this studies will be presented.

Supported by BMBF under the contract 06MZ224

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