Charge Symmetry Violation Effects in Pion Scattering off the Deuteron
V. V. Baru, A. E. Kudryavtsev, V. E. Tarasov, W. J. Briscoe, K. S. Dhuga, I. I. Strakovsky
Abstract
We discuss the theoretical and experimental situations for charge symmetry violation (CSV) effects in the elastic scattering of pi+ and pi- on deuterium (D) and 3He/3H. Accurate comparison of data for both types of targets provides evidence for the presence of CSV effects. While there are indications of a CSV effect in deuterium, it is much more pronounced in the case of 3He/3H. We provide a description of the CSV effect on the deuteron in terms of single- and double- scattering amplitudes. The Delta-mass splitting is taken into account. Theoretical predictions are compared with existing experimental data for pi-d scattering; a future article will speak to the pi-three nucleon case.
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