The Nuclear Sigma Term in the Skyrme Model: Pion-Nucleus Interaction

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dc.creatorGammal, A.
dc.creatorFrederico, T.
dc.date1998-02-27
dc.date.accessioned2026-07-07T11:11:35Z
dc.date.available2026-07-07T11:11:35Z
dc.descriptionThe nuclear sigma term is calculated including the nuclear matrix element of the derivative of the NN interaction with respect to the quark mass, $m_q\frac{\partial V_{NN}}{\partial m_q}$. The NN potential is evaluated in the skyrmion-skyrmion picture within the quantized product ansatz. The contribution of the NN potential to the nuclear sigma term provides repulsion to the pion-nucleus interaction. The strength of the s-wave pion-nucleus optical potential is estimated including such contribution. The results are consistent with the analysis of the experimental data.
dc.description16 pages (latex), 3 figures (eps), e-mail: gammal@if.usp.br and tobias@ita.cta.br
dc.identifierhttps://arxiv.org/abs/nucl-th/9802085
dc.identifierhttp://arxiv.org/abs/nucl-th/9802085
dc.identifierPhys.Rev.C57:2830-2838,1998
dc.identifierdoi:10.1103/PhysRevC.57.2830
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191145
dc.subjectNuclear Theory
dc.titleThe Nuclear Sigma Term in the Skyrme Model: Pion-Nucleus Interaction
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