On {eta} and {pi}{sup 0}{eta} photoproduction

Journal Article · Tue Dec 28 04:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3542005· OSTI ID:21511389

Doering, M ^[1]

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1. Institut fuer Kernphysik and Juelich Center for Hadron Physics, Forschungszentrum Juelich, D-52425 Juelich (Germany)

The recently discovered enhancement of {eta} photoproduction on the quasi-free neutron at energies around {radical}(s){approx}1.67 GeV is addressed within an SU(3) coupled channels model. The K{Sigma} threshold plays a significant role and the quasi-free cross sections on proton and neutron, {sigma}{sub n} and {sigma}{sub p}, can be quantitatively explained. For the reaction {gamma}-vectorp{yields}{pi}{sup 0}{eta}p, we evaluate the polarization observables I{sup S} and I{sup C} from a chiral unitary amplitude developed earlier. The I{sup S} and I{sup C} observables have been recently measured for the first time by the CBELSA/TAPS collaboration. We show the significance of the {Delta}(1700)D{sub 33} resonance and its S-wave decay into {eta}{Delta}(1232) which further confirms the dynamical nature of this resonance.

• OSTI ID: 21511389
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1322; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BARYONS
BASIC INTERACTIONS
BOSONS
CHIRALITY
COUPLED CHANNEL THEORY
CROSS SECTIONS
DECAY
DELTA BARYONS
DELTA-1700 BARYONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ETA MESONS
FERMIONS
GEV RANGE
GEV RANGE 01-10
HADRONS
INTERACTIONS
KAONS
MAGNETIC MOMENTS
MESONS
N*BARYONS
NEUTRONS
NUCLEONS
PARTIAL WAVES
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PHOTOPRODUCTION
POLARIZATION
PROTONS
PSEUDOSCALAR MESONS
RESONANCE
S WAVES
STRANGE MESONS
STRANGE PARTICLES