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Sep 5 – 9, 2022
online
US/Eastern timezone
Thank you to all the participants for a great QNP2022!

Coupled Channel Partial Wave Analysis for Light Meson Spectroscopy

Sep 5, 2022, 12:30 PM
25m
online

online

FSU, Tallahassee, FL, USA

Speaker

Dr Bertram Kopf (Ruhr-Universität Bochum)

Description

Recent results of coupled channel partial wave analyses with various $\bar{p}p$-annihilation, $\pi\pi$- and $\pi^-p$-scattering data performed with the powerful and user-friendly PAWIAN (Partial Wave Interactive Analysis) package will be presented. By considering analyticity and unitarity conditions using the K-matrix approach with Chew-Mandelstam functions, pole positions and decay branching fractions for numerous light mesons could be determined. Also a significant contribution of the $\pi_1$-wave has been identified in $\bar{p}p$ in-flight data from Crystal Barrel. In particular the coupling of the amplitudes identified in the $\bar{p}p$ channels with the $\pi_1$- and $a_2$-waves seen in the $\pi^- p$-process measured at COMPASS could provide new insights for a better understanding of this spin exotic $I^G(J^{PC})=1^-(1^{-+})$ wave in the mass region below 2 GeV$/c^2$.

speaker affiliation Ruhr-Universität Bochum

Primary author

Dr Bertram Kopf (Ruhr-Universität Bochum)

Co-authors

Dr Meike Küßner (Ruhr-Universität Bochum) Prof. Ulrich Wiedner (Ruhr-Universität Bochum)

Presentation materials