Dispersive and absorptive corrections to the pion-deuteron scattering length

Details Dispersive and absorptive corrections to the pion-deuteron scattering length Dispersive and absorptive corrections to the pion-deuteron scattering length

2006-08-17

arxiv.org/abs/nucl-th/0608042v2

Phys.Lett.B648:46-53,2007

Physics

Nuclear Physics

Nuclear Theory

Numerical error corrected. Results for dispersive corrections changed - conclusions unchanged. Version as accepted by Phys. Le

Scientific paper

10.1016/j.physletb.2006.12.078

We present a parameter--free calculation of the dispersive and absorptive contributions to the pion--deuteron scattering length based on chiral perturbation theory. We show that once all diagrams contributing to leading order to this process are included, their net effect provides a small correction to the real part of the pion--deuteron scattering length. At the same time the sizable imaginary part of the pion--deuteron scattering length is reproduced accurately.

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