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Strange-Meson Spectroscopy at COMPASS

COMPASS is a multi-purpose fixed-target experiment at CERN aimed at studying the structure and spectrum of hadrons. It has collected the so far world’s largest data set on diffractive production of the K−π−π+ decay, which in principle gives access to all kaon states. We performed an elaborate partia...

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Detalles Bibliográficos
Autor principal: Wallner, S.
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:https://dx.doi.org/10.1142/9789811219313_0019
http://cds.cern.ch/record/2703568
Descripción
Sumario:COMPASS is a multi-purpose fixed-target experiment at CERN aimed at studying the structure and spectrum of hadrons. It has collected the so far world’s largest data set on diffractive production of the K−π−π+ decay, which in principle gives access to all kaon states. We performed an elaborate partial-wave analysis, using model-selection techniques to select the wave set based on a large systematically constructed pool of allowed partial waves. The partial- wave decomposition reveals signals in the mass region of well-known states, such as K1(1270) and K1(1400). In addition, we observe potential signals from excited states, such as K1(1650).