First $\pi K$ atom lifetime and $\pi K$ scattering length measurements

B. Adeva, L. Afanasyev, Y. Allkofer +65

The results of a search for hydrogen-like atoms consisting of ${\pi }^{\mp }{K}^{\pm }$ mesons are presented. Evidence for $\pi K$ atom production by 24 GeV/c protons from CERN PS interacting…