Use of V_{low-k} in a chiral-perturbation-theory description of the $pp\to ppπ^0$ reaction

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dc.creatorKim, Y.
dc.creatorDanchev, I.
dc.creatorKubodera, K.
dc.creatorMyhrer, F.
dc.creatorSato, T.
dc.date2005-09-01
dc.date2005-10-19
dc.date.accessioned2026-07-07T10:30:42Z
dc.date.available2026-07-07T10:30:42Z
dc.descriptionPreviously, the near-threhold $pp\to ppπ^0$ reaction was studied with the use of transition operators derived from chiral perturbation theory ($χ$PT) and the nuclear wave functions generated by high-precision phenomenological potentials. A conceptual problem in that approach was that the transition amplitude receives contributions from very high momentum components (above the cutoff scale of $χ$PT) in the nuclear wave functions. In the present work, we avoid this problem by replacing the "bare" phenomenological potentials with V_{low-k}, which is an effective potential derived from a bare potential by integrating out momentum components higher than a specified cutoff scale. The use of V_{low-k} is found to give an enhancement of the $pp\to ppπ^0$ cross sections over the values obtained with bare potentials. Although this enhancement brings the calculated cross sections closer to the experimental values, the incident-energy dependence of the cross section is not well reproduced, a problem that seems to indicate the necessity of including higher chiral order terms than considered in the present work.
dc.description16 pages and 6 figures
dc.identifierhttps://arxiv.org/abs/nucl-th/0509004
dc.identifierhttp://arxiv.org/abs/nucl-th/0509004
dc.identifierPhys.Rev.C73:025202,2006
dc.identifierdoi:10.1103/PhysRevC.73.025202
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/178209
dc.subjectNuclear Theory
dc.titleUse of V_{low-k} in a chiral-perturbation-theory description of the $pp\to ppπ^0$ reaction
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