Chiral Perturbation Approach to the pp -> pp pi0 Reaction Near Threshold

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dc.creatorPark, B. -Y.
dc.creatorMyhrer, F.
dc.creatorMorones, J. R.
dc.creatorMeissner, T.
dc.creatorKubodera, K.
dc.date1995-12-15
dc.date1996-01-26
dc.date.accessioned2026-07-07T11:15:35Z
dc.date.available2026-07-07T11:15:35Z
dc.descriptionThe usual theoretical treatments of the near-threshold $pp \rightarrow ppπ^0$ reaction are based on various phenomenological Lagrangians. In this work we examine the relationship between these approaches and a systematic chiral perturbation method. Our chiral perturbation calculation indicates that the pion rescattering term should be significantly enhanced as compared with the traditional phenomenological treatment, and that this term should have substantial energy and momentum dependence. An important consequence of this energy-momentum dependence is that, for a representative threshold kinematics and within the framework of our semiquantitative calculation, the rescattering term interferes destructively with the Born-term in sharp contrast to the constructive interference obtained in the conventional treatment. This destructive interference makes theoretical cross sections for $pp \rightarrow ppπ^0$ much smaller than the experimental values, a feature that suggests the importance of the heavy-meson exchange contributions to explain the experimental data.
dc.description35 pages (REVTeX), 5 figures as 1 PostScript file acknowledgement changed, reference added, Phys.Rev.C (in print)
dc.identifierhttps://arxiv.org/abs/nucl-th/9512023
dc.identifierhttp://arxiv.org/abs/nucl-th/9512023
dc.identifierPhys.Rev.C53:1519-1531,1996
dc.identifierdoi:10.1103/PhysRevC.53.1519
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192433
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleChiral Perturbation Approach to the pp -> pp pi0 Reaction Near Threshold
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