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Changes between Version 8 and Version 9 of CoulombHadronicInterference


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Timestamp:
Oct 4, 2013, 1:38:47 PM (11 years ago)
Author:
jkaspar
Comment:

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  • CoulombHadronicInterference

    v8 v9  
    33Historically, there have been developed two approaches to calculate the effects of the interference between Coulomb and hadronic forces. Both are included in Elegent.
    44
    5 * The '''Feynman-diagram approach''' is best represented by the work of West Yennie [[http://link.aps.org/doi/10.1103/PhysRev.172.1413|WEST, G. B. and YENNIE, D. R., Phys. Rev. 172 (1968) 1413-1422]]. In this publication there are two formulae derived: (full) West-Yennie formula (denoted WY) and simplified West-Yennie formula (denoted SWY). The latter was obtained in the approximation of purely exponential hadronic amplitude with constant phase. Therefore - strictly speaking - is not compatible with most of the phenomenological models. It is included in Elegent for reasons of comparison - the SWY formula has been used extensively (at least) until recently.
     5* The '''Feynman-diagram approach''' is best represented by the work of West Yennie [[http://link.aps.org/doi/10.1103/PhysRev.172.1413|WEST, G. B. and YENNIE, D. R., Phys. Rev. 172 (1968) 1413-1422]]. In this publication there are two formulae derived: (full) West-Yennie formula (denoted WY) and simplified West-Yennie formula (denoted SWY). The latter was obtained in the approximation of purely exponential hadronic amplitude with constant phase. Therefore - strictly speaking - it is not compatible with most of the phenomenological models. It is included in Elegent for reasons of comparison - the SWY formula has been used extensively (at least) until recently.
    66
    77* The '''eikonal approach''' has been pursued by many authors, most recently by Kundrát and Lokajíček [[http://link.springer.com/article/10.1007/BF01557628|KUNDRÁT, V. and LOKAJÍČEK, M., Z. Phys. C63 (1994) 619-630]]. In this framework, no explicit assumption on the form of the hadronic amplitude is made. The resulting interference formula is denoted KL.