Extracting $\sigma _{\pi N}$ from Pionic Atoms
نویسندگان
چکیده
منابع مشابه
Evidence for partial chiral symmetry restoration from pionic atoms
Extensive data on strong interaction effects in pionic atoms are analyzed with a density-dependent isovector scattering amplitude suggested recently by Weise to result from a density dependence of the pion decay constant. Most of the so-called ‘missing s-wave repulsion’ is removed when adopting this approach, thus indicating a partial chiral symmetry restoration in dense matter. The resulting p...
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The energy dependence of chirally expanded πN isoscalar and isovector amplitudes b 0 (E) and b 1 (E) respectively, for zero-momentum off shell pions near threshold, is tested by imposing the minimal substitution requirement E → E − V c on the properly constructed pion optical potential used in a large-scale fit to 100 pionic-atom data across the periodic table which also include the recently es...
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ژورنال
عنوان ژورنال: Acta Physica Polonica B
سال: 2020
ISSN: 0587-4254,1509-5770
DOI: 10.5506/aphyspolb.51.45