skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

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]

Authors:
;  [1]; ;  [2];  [3]
  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))
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
6425904
Resource Type:
Journal Article
Journal Name:
Physical Review, C
Additional Journal Information:
Journal Volume: 60:3; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
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)

Citation Formats

Titov, A.I., Toki, H., Titov, A.I., Streltsova, O., and Lee, T.H. Structure of the [phi] photoproduction amplitude at a few GeV. United States: N. p., 1999. Web. doi:10.1103/PhysRevC.60.035205.
Titov, A.I., Toki, H., Titov, A.I., Streltsova, O., & Lee, T.H. Structure of the [phi] photoproduction amplitude at a few GeV. United States. doi:10.1103/PhysRevC.60.035205.
Titov, A.I., Toki, H., Titov, A.I., Streltsova, O., and Lee, T.H. Wed . "Structure of the [phi] photoproduction amplitude at a few GeV". United States. doi:10.1103/PhysRevC.60.035205.
@article{osti_6425904,
title = {Structure of the [phi] photoproduction amplitude at a few GeV},
author = {Titov, A.I. and Toki, H. and Titov, A.I. and Streltsova, O. and Lee, T.H.},
abstractNote = {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]},
doi = {10.1103/PhysRevC.60.035205},
journal = {Physical Review, C},
issn = {0556-2813},
number = ,
volume = 60:3,
place = {United States},
year = {1999},
month = {9}
}