Nucleon Resonance Electrocouplings from the CLAS Data on Exclusive Meson Electroproduction off Protons

Abstract

${\gamma }_{v}N{N}^{\ast }$ transition helicity amplitudes (electrocouplings) of several prominent excited proton states are determined for the first time in independent analyses of ${\pi }^{+}n$, ${\pi }^{0}p$, and ${\pi }^{+}{\pi }^{-}p$ electroproduction off protons. Analysis of ${\pi }^{+}{\pi }^{-}p$ electroproduction has extended considerably information on electrocouplings of high lying N* states, which decay preferentially to the $N\pi \pi$ final states.

Contributed talk at XIV International Conference on Hadron Spectroscopy, Hadron 2011, June 13-June 17 2011, Munich, Germany

References in corpus (4)

• Excited state baryon spectroscopy from lattice QCD
• Theory Support for the Excited Baryon Program at the Jlab 12 GeV Upgrade
• Roper Properties on the Lattice: An Update
• Nucleon Resonance Electrocouplings from the CLAS Meson Electroproduction Data

Cited by in corpus (2)

• Physics Opportunities with the 12 GeV Upgrade at Jefferson Lab
• Looking into the matter of light-quark hadrons