Indications of partial chiral symmetry restoration from pionic atoms

E. Friedman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

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.

Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume524
Issue number1-2
DOIs
StatePublished - 3 Jan 2002

Keywords

  • Chiral restoration
  • Pionic atoms
  • S-wave repulsion

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