Neutral pion photoproduction has been measured from 550 to 1500 MeV with the GRAAL facility, located at the ESRF in Grenoble. Differential cross-section and beam asymmetry have been measured over a wide angular range. These high-precision data improve significantly the database for the beam asymmetry in the second and third resonance regions covering for the first time the energy domain 1100-1500 MeV. New partial-wave analyses including these data are presented for which the beam asymmetry brings crucial constraints.
|Titolo:||Measurement of pi(0) photoproduction on the proton from 550 to 1500 MeV at GRAAL|
|Data di pubblicazione:||2005|
|Appare nelle tipologie:||1.1 Articolo in rivista|