The aim of the COMPASS hadron program is to study the light-quark hadron spectrum, and in particular, to search for evidence of hybrids and glueballs. COMPASS is a fixed-target experiment at the SPS at CERN and features a two-stage spectrometer with high momentum resolution, large acceptance, particle identification and calorimetry. A short pilot run in 2004 resulted in the observation of a spin-exotic state with JPC=1+ consistent with the debated1(1600). In addition, Coulomb production at low momentum transfer data provide a test of chiral perturbation theory. During 2008 and 2009, a world leading data set was collected with the hadron beam, which is currently being analysed. The large statistics allows for a thorough decomposition of the data into partial waves. The COMPASS hadron data span over a broad range of channels and shed light on several different aspects of quantum chromodynamics.


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    Title :

    Hadron spectroscopy with COMPASS at CERN


    Contributors:

    Published in:

    Physica Scripta (Online) ; 2012 , T150 ; 014036/1-014036/3


    Publication date :

    2012


    Size :

    3 Seiten, 37 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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