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HK: Fachverband Physik der Hadronen und Kerne
HK 22: Hadron Structure and Spectroscopy V
HK 22.7: Vortrag
Mittwoch, 1. April 2020, 15:45–16:00, J-HS A
Results of the TPWA of the reaction γp → ηp — •Philipp Krönert for the CBELSA/TAPS collaboration — HISKP, Uni Bonn
The motivation to study pseudoscalar meson photoproduction is to improve the current understanding of the quantum mechanical interaction of the initial |γ p > and final state |η p >. Chew, Goldberger, Low and Nambu [1] expressed (in 1957) the fundamental transition matrix in so-called complex electro-magnetic multipoles, which are connected to partial waves.
The technique of truncated partial wave analysis (TPWA) is a straightforward method to extract these multipole parameters, up to an overall phase, from experimental data.
Results of a truncated partial wave analysis will be shown in this presentation for the reaction γ p → η p. This includes Legendre coefficients as well as multipole parameters for different truncation orders (lmax=2,3).
- [1] G. F. Chew, M. L. Goldberger, F. E. Low, and Y. Nambu. Relativistic dispersion relation approach to photomeson production. Phys. Rev., 106:1345*1355, Jun 1957