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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: |a1/2 - a3/2|. This difference is predicted by low energy QCD. Experiment DIRAC at CERN PS detects 349+-62 pairs from K+pi- and pi+K- atoms and make observation of exotic atoms consist of pion and kaons and provides way for measurement of pion-kaon scattering length difference and check of theoretical predictions.
№ | Имя | Описание | Имя файла | Размер | Добавлен |
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1. | Презентация | Valeriy.Yazkov.pdf | 656,5 КБ | 30 августа 2017 [yazkov] |