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Dispersive and absorptive corrections to the pion-deuteron scattering length

V. Lensky·V. Baru·J. Haidenbauer·C. Hanhart·A. Kudryavtsev·U. -G. Meißner
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Abstract

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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V. Lensky, V. Baru, J. Haidenbauer, C. Hanhart, A. Kudryavtsev, U. -G. Meißner. 2006-12-20. Dispersive and absorptive corrections to the pion-deuteron scattering length. https://doi.org/10.1016/j.physletb.2006.12.078

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