A Monte Carlo Calculation of the Pionium Break-up Probability with Different Sets of Pionium Target Cross Sections

C. Santamarina, M. Schumann, L. G. Afanasyev +1

Chiral Perturbation Theory predicts the lifetime of pionium, a hydrogen-like ${\pi }^{+}{\pi }^{-}$ atom, to better than 3% precision. The goal of the DIRAC experiment at CERN is to obtain and…