The s-wave pion-nucleus optical potential

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dc.creatorDoring, M.
dc.creatorOset, E.
dc.date2007-05-21
dc.date2008-03-12
dc.date.accessioned2026-07-07T11:16:15Z
dc.date.available2026-07-07T11:16:15Z
dc.descriptionWe calculate the s-wave part of the pion-nucleus optical potential using a unitarized chiral approach that has been previously used to simultaneously describe pionic hydrogen and deuterium data as well as low energy pi N scattering in the vacuum. This energy dependent model allows for additional isoscalar parts in the potential from multiple rescattering. We consider Pauli blocking and pion polarization in an asymmetric nuclear matter environment. Also, higher order corrections of the pi N amplitude are included. The model can accommodate the repulsion required by phenomenological fits, though the theoretical uncertainties are bigger than previously thought. At the same time, we also find an enhancement of the isovector part compatible with empirical determinations.
dc.description31 pages, 27 figures
dc.identifierhttps://arxiv.org/abs/0705.3027
dc.identifierhttp://arxiv.org/abs/0705.3027
dc.identifierPhys.Rev.C77:024602,2008
dc.identifierdoi:10.1103/PhysRevC.77.024602
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192610
dc.subjectNuclear Theory
dc.titleThe s-wave pion-nucleus optical potential
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