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Direct calculation of the probability of pionium ionization in the target
The goal of the DIRAC experiment at CERN is the lifetime measurement of pionium ($π^+ π^−$ atom). Its lifetime is mainly defined by the charge-exchange process $π^+ π^−$ → $π^0 π^0$. The value of the lifetime in the ground state is predicted in the framework of chiral perturbation theory with high p...
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| Lenguaje: | eng |
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2007
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| Acceso en línea: | https://dx.doi.org/10.1134/S1063778808060082 http://cds.cern.ch/record/1064783 |