The DIRAC experiment at CERN
Ch. P. Schuetz
Abstract
The DIRAC experiment at CERN aims to measure the lifetime of the pionium atom (A2π), a π+π- bound state with an accuracy of 10%. The experimental setup consists of a high precision magnetic double arm spectrometer, located at the high intensity proton beam of the CERN Proton Synchrotron. This measurement will provide - in a model independent way - the S-wave pion scattering length difference |a0 - a2| with 5% precision.
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