Photoproduction of the $\omega$ meson on the proton at large momentum transfer

Abstract

The differential cross section, $d\sigma /dt$ for $\omega$ meson exclusive photoproduction on the proton above the resonance region ($2.6<W<2.9$ GeV) was measured up to a momentum transfer $-t=5$ GeV${}^2$ using the CLAS detector at Jefferson Laboratory. The $\omega$ channel was identified by detecting a proton and ${\pi }^{+}$ in the final state and using the missing mass technique. While the low momentum transfer region shows the typical diffractive pattern expected from Pomeron and Reggeon exchange, at large $-t$ the differential cross section has a flat behavior. This feature can be explained by introducing quark interchange processes in addition to the QCD-inspired two-gluon exchange.

5 pages, 5 figures

References in corpus (11)

• Effective Functional Form of Regge Trajectories
• Photoproduction of vector mesons off nucleons near threshold
• Photoproduction of Vector Mesons at Large Transfer
• Nucleon resonances in omega photoproduction
• Photoproduction of phi(1020) mesons on the proton at large momentum transfer
• DRAFT: Photoproduction of the ${\rho }^0$ meson on the proton at large momentum transfer
• Large momentum transfer electroproduction of mesons
• New anomalous trajectory in Regge theory
• Compton scattering, vector meson photoproduction and the partonic structure of the nucleon
• Fixed-Angle Elastic Hadron Scattering
• Hard exclusive photoproduction of $\Phi$ mesons

Cited by in corpus (32)

• Baryon spectroscopy
• ${\pi }^{+}$ photoproduction on the proton for photon energies from 0.725 to 2.875 GeV
• ${\pi }^0$ photoproduction on the proton for photon energies from 0.675 to 2.875 GeV
• Differential cross sections and spin density matrix elements for the reaction gamma p -> p omega
• Light Baryon Spectroscopy
• Rho meson photoproduction at low energies
• Spin effects and baryon resonance dynamics in phi-meson photoproduction at few GeV
• Exclusive ${\rho }^0$ meson electroproduction from hydrogen at CLAS
• Deeply virtual and exclusive electroproduction of omega mesons
• The space-time structure of hard scattering processes
• Partial wave analysis of the reaction gamma p -> p omega$ and the search for nucleon resonances
• Probing Invisible Vector Meson Decays with NA64 and LDMX
• The extraction of $\varphi -N$ total cross section from $d(\gamma ,p{K}^{+}{K}^{-})n$
• Vector Meson Photoproduction with a Linearly Polarized Beam
• Beam asymmetry in near threshold omega photoproduction off the proton
• Exclusive Meson Photo- and Electro-production, a Window on the Structure of Hadronic Matter
• Photon beam asymmetry $\Sigma$ in the reaction $\vec{\gamma }p\to p\omega$ for $E_{\gamma }$ = 1.152 to 1.876 GeV
• Channel coupling effects in $\rho$-meson photoproduction
• Okubo-Zweig-Iizuka rule violation in photoproduction
• Measurement of the Σ beam asymmetry for the ω photo-production off the proton and the neutron at GRAAL
• Unitarity constraints on meson electroproduction at backward angles
• Features of $\omega$ photoproduction off nucleon target at forward angles : Dominance of $\pi$ exchange with Regge cuts and scaling of differential cross sections
• Quasielastic rho0 electroproduction on the proton at intermediate energy: Role of scalar and pseudoscalar meson exchange
• Theoretical study of incoherent phi photoproduction on a deuteron target
• Glueball masses and Regge trajectories for the QCD-inspired potential
• Features of $\omega$ photoproduction off proton target at backward angles : Role of nucleon Reggeon in $u$-channel with parton contributions
• High Energy Behaviour of Light Meson Photoproduction
• Differential Cross Section for $\gamma d\to \omega d$ using CLAS at Jefferson Lab
• Probing Quantum Phenomena through Photoproduction in Relativistic Heavy-Ion Collisions
• Pseudoscalar and Scalar Meson Photoproduction Interpreted by Regge Phenomenology
• The Constituent Counting Rule and Omega Photoproduction
• Kinematic Analysis Towards Glueballs