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5 papers · 1 filter
Soft two-meson-exchange nucleon-nucleon potentials. II. One-pair and two-pair diagrams
Th. A. Rijken, V. G. J. Stoks
Two-meson-exchange nucleon-nucleon potentials are derived where either one or both nucleons contains a pair vertex. Physically, the meson-pair vertices are meant to describe in an…
Soft two-meson-exchange nucleon-nucleon potentials. I. Planar and crossed-box diagrams
Th. A. Rijken, V. G. J. Stoks
Pion-meson-exchange nucleon-nucleon potentials are derived for two nucleons in the intermediate states. The mesons we include are (i) pseudoscalar mesons: ; (ii) vector m…
A New Mass Formula for NG Bosons in QCD
Reginald T. Cahill, Susan M. Gunner
An often used mass formula for Nambu-Goldstone (NG) bosons in QCD, such as the pions, involves the condensate , and the quark current masses. We argue, withi…
Few-Body Descriptions of the piNN System in Three and Four Dimensions
B. Blankleider, A. N. Kvinikhidze
We summarise the recent theoretical progress in few-body descriptions of the piNN system. Previous descriptions, both three- and four-dimensional, are shown to possess serious theo…
Covariant four-dimensional scattering equations for the system
D. R. Phillips, I. R. Afnan
We derive a set of coupled four-dimensional integral equations for the system using our modified version of the Taylor method of classification-of-diagrams. These equation…