Abstract
We computed external and internal Coulomb distortions as well as strong charge symmetry breaking (CSB) effects in π ±d→ π ±d. Available data for T π = 143 MeV indicate the presence of CSB on the level of observed and deduced parameters for different Δ-isobars and the pn mass difference. Data for T π 1 ̆ 80 MeV are predicted to better suit the extraction of a measure of charge symmetry breaking. This note also contains a critical analysis of a previous study of CSB effects on σ πd tot.
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