C. Santamarina

activity

20032011

π^{+} π^{-}

atom lifetime

106 citations · 188 across the 6 of their papers we have counts for

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physics.atom-ph2004★ 6 cited

Dynamics of the Pionium with the Density Matrix Formalism

L Afanasyev, C Santamarina, A Tarasov +1

The evolution of pionium, the $π^{+} π^{-}$ hydrogen-like atom, while passing through matter is solved within the density matrix formalism in the first Born approximation. We compare t…

physics.atom-ph2003★ 19 cited

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 $π^{+} π^{-}$ atom, to better than 3% precision. The goal of the DIRAC experiment at CERN is to obtain and…