Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10725051 | Physics Letters B | 2006 | 5 Pages |
Abstract
It is shown that isospin-breaking corrections to the pion-deuteron scattering length can be very large, because of the vanishing of the isospin-symmetric contribution to this scattering length at leading order in chiral perturbation theory. We further demonstrate that these corrections can explain the bulk of the discrepancy between the recent experimental data on pionic hydrogen and pionic deuterium. We also give the first determination of the electromagnetic low-energy constant f1.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Ulf-G. MeiÃner, Udit Raha, A. Rusetsky,