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- Timestamp:
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Oct 4, 2013, 1:37:53 PM (11 years ago)
- Author:
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jkaspar
- Comment:
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v7
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v8
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1 | 1 | = Models of Coulomb-hadronic interference = |
2 | 2 | |
3 | | TODO: introduce the problem, why models |
| 3 | Historically, there have been developed two approaches to calculate the effects of the interference between Coulomb and hadronic forces. Both are included in Elegent. |
4 | 4 | |
5 | | TODO: Ref. to the discussion in my thesis (corrected KL formula etc.). |
| 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. |
6 | 6 | |
7 | | * Model 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]] |
8 | | * full and simplified version |
| 7 | * 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. |
9 | 8 | |
10 | | * Model of Kundrát and Lokajíček [[http://link.springer.com/article/10.1007/BF01557628|KUNDRÁT, V. and LOKAJÍČEK, M., Z. Phys. C63 (1994) 619-630]] |
| 9 | More details can be found in the journal publication linked from the [[|home page]] or in Section 1.3 in [[http://cdsweb.cern.ch/record/1441140|CERN-THESIS-2011-214]]. |
11 | 10 | |
12 | | The choice of the interference model is represented by [[http://elegent.hepforge.org/doxygen/classElegent_1_1CoulombInterference.html|Elegent::CoulombInterference::ciMode]]. |
| 11 | The choice of the interference model is represented by [[http://elegent.hepforge.org/doxygen/classElegent_1_1CoulombInterference.html|Elegent::CoulombInterference::CIMode]]. |