학술논문
Measurement of πphotoproduction on the proton from 550 to 1500 MeV at GRAAL.
Document Type
Article
Author
Source
Subject
*PIONS
*PION production
*GIRDERS
*CROSS section fluctuations (Nuclear physics)
*NUCLEAR cross sections
*RESONANCE
*NUCLEAR energy
*
*
*
*
*
*
Language
ISSN
1434-6001
Abstract
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. [ABSTRACT FROM AUTHOR]