Structure of the [phi] photoproduction amplitude at a few GeV

Journal Article · Wed Sep 01 00:00:00 EDT 1999 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.60.035205· OSTI ID:6425904

Titov, A I; Toki, H ^[1]; Titov, A I; Streltsova, O ^[2]; Lee, T H ^[3]

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1. Research Center for Nuclear Physics, Osaka University, Osaka 567-0047 (Japan)
2. Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna 141980 (Russia)
3. Physics Division, Argonne National Laboratory, Illinois 60439 (United States)

The structure of the [phi] photoproduction amplitude in the [radical] (s) [approximately]2[minus]5 hthinsp;GeV region is analyzed based on Pomeron-exchange and meson-exchange mechanisms. The SU(3) symmetry and the [phi] decay widths are exploited to determine the parameters that are needed to predict the amplitudes due to pseudoscalar mesons ([pi][sup 0],[eta]) exchange, scalar mesons ([sigma],a[sub 0],f[sub 0]) exchange, and the [phi] radiation from the nucleon. In addition to the universally accepted Pomeron exchange with an intercept [alpha](0)[approximately]1.08, we investigate the role of a second Pomeron with [alpha](0)[lt]0, as inspired by the glueball (J[sup [pi]]=0[sup +],M[sub b][sup 2][approximately]3 hthinsp;GeV[sup 2]) predicted by the lattice QCD calculation and dual Ginsburg-Landau model. It is found that the existing limited data at low energies near threshold can accommodate either the second Pomeron or the scalar mesons exchange. The differences between these two competing mechanisms are shown to have profound effects on various density matrices which can be used to calculate the cross sections as well as various single and double polarization observables. We predict a definite isotopic effect: polarization observables of [phi] photoproduction on the proton and neutron targets can have differences of a factor 2 and more. [copyright] [ital 1999] [ital The American Physical Society]

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• OSTI ID: 6425904
• Journal Information: Physical Review, C, Vol. 60:3; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DENSITY MATRIX
GINZBURG-LANDAU THEORY
LATTICE FIELD THEORY
PHOTON-PROTON INTERACTIONS
PHOTOPRODUCTION
POLARIZATION
POMERANCHUK PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
SCALAR MESONS
SU-3 GROUPS
BASIC INTERACTIONS
BOSONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
FIELD THEORIES
HADRONS
INTERACTIONS
LIE GROUPS
MATRICES
MESONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTON-BARYON INTERACTIONS
PHOTON-HADRON INTERACTIONS
PHOTON-NUCLEON INTERACTIONS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
SU GROUPS
SYMMETRY GROUPS
662330* - Photon & Charged-Lepton Interactions with Hadrons- (1992)