On the determination of the pion effective mass in nuclei from pionic atoms

Abstract

The binding energies of the deeply bound 1s and 2p states in pionic atoms of ${}^{207}$Pb, recently established experimentally in the ${}^{208}$Pb(d,${}^3$He) reaction, have been used by several groups to derive the pion effective mass in nuclear matter. We show that these binding energies are fully consistent with `normal' pionic atoms and that the real part of the pion-nucleus potential at the center of ${}^{207}$Pb is 28$\pm$3 MeV and not 20 MeV as suggested previously.

8 pages, Revtex, 2 figures, accepted by Physics Letters B

References in corpus (1)

• Deeply bound pionic states and the effective pion mass in nuclear systems

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• Density dependence of the s-wave repulsion in pionic atoms
• Relativistic quantum transport theory of hadronic matter: the coupled nucleon, delta and pion system
• Pion weak decay constant at finite density from the instanton vacuum
• The s-wave repulsion and deeply bound pionic atoms: fact and fancy