s-wave pion-nucleus optical potential
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s-wave pion-nucleus optical potential

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s-wave pion-nucleus optical potential

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dc.contributor.author Döring, Michael
dc.contributor.author Oset Báguena, Eulogio
dc.date.accessioned 2015-09-07T11:50:03Z
dc.date.available 2015-09-07T11:50:03Z
dc.date.issued 2008
dc.identifier.uri http://hdl.handle.net/10550/46899
dc.description.abstract We 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.language.iso eng
dc.relation.ispartof Physical Review C, 2008, vol. 77, num. 2, p. 024602
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Döring, Michael Oset Báguena, Eulogio 2008 s-wave pion-nucleus optical potential Physical Review C 77 2 024602
dc.subject Física
dc.title s-wave pion-nucleus optical potential
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-09-07T11:50:03Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevC.77.024602
dc.identifier.idgrec 079371

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