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The European Physical Journal A

, Volume 35, Issue 3, pp 253–266 | Cite as

The physical meaning of scattering matrix singularities in coupled-channel formalisms

BRAG 2007 Workshop summary
  • S. Capstick
  • A. Švarc
  • L. TiatorEmail author
  • J. Gegelia
  • M. M. Giannini
  • E. Santopinto
  • C. Hanhart
  • S. Scherer
  • T. -S. H. Lee
  • T. Sato
  • N. Suzuki
Regular Article - Theoretical Physics

Abstract.

The physical meaning of bare and dressed scattering matrix singularities has been investigated. Special attention has been attributed to the role of the well-known invariance of the scattering matrix with respect to the field transformation of the effective Lagrangian. Examples of evaluating bare and dressed quantities in various models are given.

PACS.

11.80.Gw Multichannel scattering 13.60.Le Meson production 13.75.Cs Nucleon-nucleon interactions (including antinucleons, deuterons, etc.)[ :AND:]14.20.Gk Baryon resonances with S = 0  

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2008

Authors and Affiliations

  • S. Capstick
    • 1
  • A. Švarc
    • 2
  • L. Tiator
    • 3
    Email author
  • J. Gegelia
    • 3
  • M. M. Giannini
    • 4
  • E. Santopinto
    • 4
  • C. Hanhart
    • 5
  • S. Scherer
    • 3
  • T. -S. H. Lee
    • 6
    • 7
  • T. Sato
    • 7
    • 8
  • N. Suzuki
    • 7
    • 8
  1. 1.Department of PhysicsFlorida State UniversityTallahasseeUSA
  2. 2.Rudjer Bošković InstituteZagrebCroatia
  3. 3.Institut für KernphysikJohannes Gutenberg-Universität MainzMainzGermany
  4. 4.Dipartimento di FisicaUniversità degli Studi di Genova and INFN, Sezione di GenovaGenovaItaly
  5. 5.Institut für KernphysikForschungszentrum JülichJülichGermany
  6. 6.Physics DivisionArgonne National LaboratoryArgonneUSA
  7. 7.Excited Baryon Analysis CenterThomas Jefferson National Accelerator FacilityNewport NewsUSA
  8. 8.Department of PhysicsOsaka UniversityToyonaka, OsakaJapan

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