Neutron skins of ${}^{208}$Pb and ${}^{48}$Ca from pionic probes

Abstract

The neutron skin of ${}^{208}$Pb has received considerable attention in recent years. A variety of strongly-interacting probes depict a rather consistent picture but pionic probes have not been referred to in this context. We present here neutron-skin values from pionic atoms and from total reaction cross sections of ${\pi }^{+}$ between 0.7 and 2 GeV/c which fit well into the picture. In addition we show that a neutron skin for ${}^{48}$Ca can be obtained from existing data on pionic atoms and the result agrees with pion scattering experiments and with the scattering of $\alpha$ particles.

9 pages, 3 figures, to be published in Nuclear Physics A

References in corpus (3)

• Constraints on the symmetry energy and neutron skins from experiments and theory
• Measurement of the Neutron Radius of 208Pb Through Parity-Violation in Electron Scattering
• In-medium nuclear interactions of low-energy hadrons

Cited by in corpus (32)

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• Constraints on Nuclear Symmetry Energy Parameters
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• The pion-nucleon $\sigma$ term from pionic atoms
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• Probing neutron-skin thickness with free spectator neutrons in ultracentral high-energy isobaric collisions
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• Measuring deformed neutron skin with free spectator nucleons in relativistic heavy-ion collisions
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• Constraints on the Nuclear Symmetry Energy from Experiments, Theory and Observations
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• Properties of ${}^{208}$Pb predicted from the relativistic equation of state in the full Dirac space
• Investigation of constraints on few-neutron forces in neutron matter by empirical information on the neutron skin of 48Ca and 208Pb
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• Elimination of influence of neutron-skin size difference of initial colliding nuclei in Pb+Pb collisions
• Probing small neutron skin variations in isotope pairs by hyperon-antihyperon production in antiproton--nucleus interactions
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• Investigating the possibility of extracting neutron-skin thickness in nuclei by their collisions at intermediate energies