Phase ambiguities in complete experiments and PWA

13 Mar 2017, 15:00
30m
Lecture Hall (Bad Honnef)

Lecture Hall

Bad Honnef

Topic 1: Spectroscopy of Baryons, Light- and Heavy-Quark Mesons Session

Speaker

Prof. Alfred Svarc (Rudjer Boskovic Institute)

Description

For quite some time it is well known that single-channel physical observables are invariant with respect to a general energy and angle dependent phase rotation. This invariance is called continuum ambiguity. We show that, contrary to well-behaved energy dependent invariance, angle dependent phase rotation mixes multipoles, and changes their analytic structure. A direct consequence is that without determining the angular dependence of the free phase, partial wave decomposition is non-unique.

Author

Prof. Alfred Svarc (Rudjer Boskovic Institute)

Co-author

Presentation materials