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Nucleon-nucleon partial-wave analysis to 1100 MeV

Nucleon-nucleon partial-wave analysis to 1100 MeV Comprehensive analyses of nucleon-nucleon elastic-scattering data below 1100 MeV laboratory kinetic energy are presented. The data base from which an energy-dependent solution and 22 single-energy solutions are obtained consists of 7223 pp and 5474 np data. A resonancelike structure is found to occur in the D 2 1 , F 3 3 , P 2 3 - 3 F 2 , and F 4 3 - 3 H 4 partial waves; this behavior is associated with poles in the complex energy plane. The pole positions and residues are obtained by analytic continuation of the ‘‘production’’ piece of the T matrix obtained in the energy-dependent solution. The new phases differ somewhat from previously published VPI&SU solutions, especially in I =0 waves above 500 MeV, where np data are very sparse. The partial waves are, however, based upon a significantly larger data base and reflect correspondingly smaller errors. The full data base and solution files can be obtained through a computer scattering analysis interactive dial-in (SAID) system at VPI&SU, which also exists at many institutions around the world and which can be transferred to any site with a suitable computer system. The SAID system can be used to modify solutions, plan experiments, and obtain any of the multitude of predictions which derive from partial-wave analyses of the world data base. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Nucleon-nucleon partial-wave analysis to 1100 MeV

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1987 The American Physical Society
ISSN
1089-4918
DOI
10.1103/PhysRevD.35.128
Publisher site
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Abstract

Comprehensive analyses of nucleon-nucleon elastic-scattering data below 1100 MeV laboratory kinetic energy are presented. The data base from which an energy-dependent solution and 22 single-energy solutions are obtained consists of 7223 pp and 5474 np data. A resonancelike structure is found to occur in the D 2 1 , F 3 3 , P 2 3 - 3 F 2 , and F 4 3 - 3 H 4 partial waves; this behavior is associated with poles in the complex energy plane. The pole positions and residues are obtained by analytic continuation of the ‘‘production’’ piece of the T matrix obtained in the energy-dependent solution. The new phases differ somewhat from previously published VPI&SU solutions, especially in I =0 waves above 500 MeV, where np data are very sparse. The partial waves are, however, based upon a significantly larger data base and reflect correspondingly smaller errors. The full data base and solution files can be obtained through a computer scattering analysis interactive dial-in (SAID) system at VPI&SU, which also exists at many institutions around the world and which can be transferred to any site with a suitable computer system. The SAID system can be used to modify solutions, plan experiments, and obtain any of the multitude of predictions which derive from partial-wave analyses of the world data base.

Journal

Physical Review D – American Physical Society (APS)

Published: Jan 1, 1987

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