Jun 10 – 14, 2019
Bonn, Campus Poppelsdorf
Europe/Zurich timezone

Determining dominant partial waves in photoproduction via moment analysis

Jun 11, 2019, 4:30 PM
HS 7

HS 7

Partial wave analyses and baryon resonance parameter extraction Parallel Session A


Yannick Wunderlich (University of Bonn)


Important insights into the excitation spectra of baryons are provided by measure-
ments of polarization observables in reactions that involve particles with spin. The
photoproduction of a single pseudoscalar meson constitutes an example-reaction that
has been under intense investigation recently.
In this talk, we present the basic method of moment-analysis for pseudoscalar meson
photoproduction, in which just the angular distributions are analyzed. Using this
method, the total angular momentum quantum number of the dominant partial
waves contributing in the data can be extracted quickly. Furthermore, the Legendre-
coefficients extracted from the angular distributions show interesting composition-
patterns in terms of multipoles and allow for instructive comparisons to models.
In the talk, we will show recent results for moment analyses of polarization data for the photoproduction of pions and eta-mesons.

Primary author

Yannick Wunderlich (University of Bonn)

Presentation materials