Evidence for partial chiral symmetry restoration from pionic atoms

Preprint

1 August 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.nucl-th/0107050

Abstract

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 potentials describe quite well also elastic scattering of 20 MeV pions on Ca. Further tests with elastic scattering are desirable.

Keywords

CHIRAL SYMMETRY RESTORATION
SCATTERING AMPLITUDE
SYMMETRY RESTORATION
PARTIAL CHIRAL
PIONIC ATOMS
DENSE MATTER

All Related Versions

Version 1, 2001-07-17, ArXiv
Version 2, 2001-08-01, ArXiv
Published version: Physics Letters B, 524 (1-2), 87.

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