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
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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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
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Result continuities
Project
GA202/03/0210: Few-nucleon systems and electroweak interactions
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
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
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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
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EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BE - Theoretical physics
Year of implementation
2005