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Observation and investigation of $\pi$K atoms
There is accurate relation between lifetime of atoms, consisting of pion and kaon, and a difference of S-wave pion kaon scattering length with isospin 1/2 and 3/2: $\left | a_{1/2} - a_{3/2} \right |$. This difference is predicted by low energy QCD. Experiment DIRAC at CERN PS detects $349 \pm 62$ p...
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| Lenguaje: | eng |
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2017
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| Acceso en línea: | https://dx.doi.org/10.1051/epjconf/201715803013 http://cds.cern.ch/record/2311926 |