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Pion re-scattering operator in the S-matrix approach

Result description

The pion rescattering operator for pion production, derived recently in time-ordered perturbation theory, is compared with the one following from the simple S-matrix construction. We show that this construction is equivalent to the on-shell approximationintroduced in previous articles. For a realistic NN interaction, the S-matrix approach, and its simplified fixed threshold-kinematics version, work well near threshold.

Keywords

reaction nera-threshold - extensionmeson exchange currentsextension

The result's identifiers

Alternative languages

  • Result language

    angličtina

  • Original language name

    Pion re-scattering operator in the S-matrix approach

  • Original language description

    The pion rescattering operator for pion production, derived recently in time-ordered perturbation theory, is compared with the one following from the simple S-matrix construction. We show that this construction is equivalent to the on-shell approximationintroduced in previous articles. For a realistic NN interaction, the S-matrix approach, and its simplified fixed threshold-kinematics version, work well near threshold.

  • Czech name

    Operátor přerozptylu pionu v S-maticovém přístupu

  • Czech description

    Efektivní dvoučásticový operátor pro produkci pi mezonů v nukleonových srážkách, obsahující mechanismus rozptylu mezonů na prvním z nukleonů, který byl nedávno odvozen v rámci časově uspořádané poruchové teorie je porovnán s operátorem, získaným jednoduchou S-maticovou konstrukcí. Ukazujeme, že tato konstrukce je ekvivalentní s tzv. on-shell aproximací. S-maticovy přístup pracuje dobře poblíž prahové energie pro pionovou produkci.

Classification

  • Type

    Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BE - Theoretical physics

  • OECD FORD branch

Result continuities

Others

  • Publication year

    2005

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Physical Review. C

  • ISSN

    0556-2813

  • e-ISSN

  • Volume of the periodical

    71

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    1

  • Pages from-to

    034002

  • UT code for WoS article

  • EID of the result in the Scopus database

Basic information

Result type

Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

Jx

CEP

BE - Theoretical physics

Year of implementation

2005