Related Experiment Video
Updated: Jul 6, 2026

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
Published on: July 19, 2019
Simultaneous photoproduction of eta and pi0 mesons on the proton
J Ajaka1, Y Assafiri, O Bartalini
1IN2P3, Institut de Physique Nucléaire, 91406 Orsay, France.
Abstract:
The analysis of the gammap-->etapi(0)p reaction has been performed using data from the GRAAL experiment. The total and differential cross sections and the beam asymmetry have been obtained from threshold up to 1.5 GeV of beam energy. The two resonances S11(1535) and Delta(1700) are expected to be excited in the intermediate states of this reaction. The results are used to test predictions based on the assumption that both resonances are dynamically generated from the meson-baryon interaction provided by chiral Lagrangians. The term involving the Delta(1700) excitation, followed by the decay into etaDelta(1232), is found to be dominant.
Related Concept Videos
¹H NMR: Complex Splitting
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied first.
Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation
¹H NMR Signal Multiplicity: Splitting Patterns
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
Nuclear Overhauser Enhancement (NOE)

