Vector Meson Photoproduction with an Effective Lagrangian in the Quark Model

Abstract

A quark model approach to the photoproduction of vector mesons off nucleons is proposed. Its starting point is an effective Lagrangian of the interaction between the vector meson and the quarks inside the baryon, which generates the non-diffractive s- and u- channel resonance contributions. Additional t-channel ${\pi }^0$ and $\sigma$ exchanges are included for the $\omega$ and ${\rho }^0$ production respectively to account for the large diffractive behavior in the small $t$ region as suggested by Friman and Soyeur. The numerical results are presented for the $\omega$ and $\rho$ productions in four isospin channels with the same set of parameters, and they are in good agreement with the available data not only in $\omega$ and ${\rho }^0$ productions but also in the charged $\rho$ productions where the additional t-channel $\sigma$ exchange does not contribute so that it provides an important test to this approach. The investigation is also extended to the $\varphi$ photoproduction, and the initial results show that the non-diffractive behavior of the $\varphi$ productions in the large $t$ region can be described by the s- and u- channel contributions with significantly smaller coupling constants, which is consistent with the findings in the similar studies in the QHD framework. The numerical investigation has also shown that polarization observables are essential for identifying so-called "missing resonances".

36 pages, 10 PS figures, extended version of nucl-th/9711061 and nucl-th/9803021, submitted to PRC

References in corpus (1)

• An Unified Approach To Pseudo Scalar Meson Photoproductions Off Nucleons In The Quark Model

Cited by in corpus (65)

• Study of Non-Strange Baryon Resonances with Meson Photoproduction
• Vector meson production and nucleon resonance analysis in a coupled-channel approach for energies m_N < sqrt(s) < 2 GeV II: photon-induced results
• Strong and radiative decays of the low-lying $S$- and $P$-wave singly heavy baryons
• Charmed baryon strong decays in a chiral quark model
• Charmonium spectrum and their electromagnetic transitions with higher multipole contributions
• Coupled-channel analysis of the $\omega$-meson production in $\pi N$ and $\gamma N$ reactions for c.m. energies up to 2 GeV
• Strong decays of heavy-light mesons in a chiral quark model
• Understanding the newly observed ${\Omega }_c$ states through their decays
• Spin alignment of vector mesons in heavy-ion collisions
• Nucleon resonances in omega photoproduction
• Search for tetraquark candidate Z(4430) in meson photoproduction
• Strong and radiative decays of the low-lying $D$-wave singly heavy baryons
• Strong decays of newly observed $D_{sJ}$ states in a constituent quark model with effective Lagrangians
• Strong decays of the newly observed $D(2550)$, $D(2600)$, $D(2750)$, and $D(2760)$
• Strong decays of higher excited heavy-light mesons in a chiral quark model
• Spin alignment of vector mesons by glasma fields
• Rho meson photoproduction at low energies
• Spin effects and baryon resonance dynamics in phi-meson photoproduction at few GeV
• Strong decays of higher charmonium states into open-charm meson pairs
• $\Omega$ baryon spectrum and their decays in a constituent quark model
• Nucleonic resonance excitations with linearly polarized photon in $\gamma p\to \omega p$
• Effective Lagrangian approach to the omega meson photoproduction near threshold
• $\eta$ photoproduction on the quasi-free nucleons in the chiral quark model
• A possible interpretation of the newly observed $\Omega (2012)$ state
• ${\eta }^{\prime }$ photoproduction on the nucleons in the quark model
• Study of π^{-}p \to ηn at low energies in a chiral constituent quark model
• Quark model predictions for $K^{\ast }$ photoproduction on the proton
• Mass spectra and strong decays of charmed and charmed-strange mesons
• One-loop corrections to omega photoproduction near threshold
• Near-threshold $\omega$ and $\varphi$ meson productions in $pp$ collisions
• Nucleon pole contributions in $J/\psi \to N\bar{N}\pi$, $p\bar{p}\eta$, $p\bar{p}{\eta }^{\prime }$ and $p\bar{p}\omega$ decays
• Understanding the newly observed ${\Xi }_c^0$ states through their decays
• The $K^{-}p\to {\Sigma }^0{\pi }^0$ reaction at low energies in a chiral quark model
• Towards establishing an abundant $B$ and $B_s$ spectrum up to the second orbital excitations
• Newly observed $\Omega (2012)$ state and strong decays of the low-lying $\Omega$ excitations
• Nucleonic resonance effects in the $\varphi$ meson photoproduction
• Photoproduction of phi meson off deuteron near threshold
• Non-diffractive mechanisms in the $\varphi$ meson photoproduction on nucleons
• Nucleon resonances in $\gamma p\to \omega p$ reaction
• Neutral pion photoproduction on the nucleon in a chiral quark model
• The mixing of $D_{s1}(2460)$ and $D_{s1}(2536)$
• Coherent phi and omega meson photoproduction from deuteron and non-diffractive channels
• Low energy reactions $K^{-}p\to {\Sigma }^0{\pi }^0$, $\Lambda {\pi }^0$, ${\bar{K}}^{0}n$ and the strangeness $S=-1$ hyperons
• Subthreshold rho contribution in J/psi decay to omega pion pion and Kaon anti-Kaon pion
• Vector meson photoproduction studied in its radiative decay channel
• Study of Nucleon Resonances with Double Polarization Observables of Pion Photoproduction
• Channel coupling effects in $\rho$-meson photoproduction
• Contributions of vector meson photoproduction to the Gerasimov-Drell-Hearn sum rule
• Constraints on vector meson photoproduction spin observables
• Measurement of the Σ beam asymmetry for the ω photo-production off the proton and the neutron at GRAAL
• Low energy reaction $K^{-}p\to \Lambda \eta$ and the negative parity $\Lambda$ resonances
• Combined analysis of the ${\pi }^{-}p\to K^0\Lambda$, $\eta n$ reactions in a chiral quark model
• Features of $\omega$ photoproduction off nucleon target at forward angles : Dominance of $\pi$ exchange with Regge cuts and scaling of differential cross sections
• Decay patterns of low-lying $N_{s\bar{s}}$ states to the strangeness channels
• Near threshold electroproduction of the omega meson at Q2 ~ 0.5 GeV2
• Role of $\Lambda (1670)$ in the $\gamma p\to K^{+}\eta \Lambda$ reaction near threshold
• Photoproduction of charmed vector mesons, $\gamma +N\to {\mathcal{B}}_c+\overline{D^{\ast }}$, with ${\mathcal{B}}_c={\Lambda }_c$ or ${\Sigma }_c$
• The $g_{V\sigma \gamma }$-coupling constants in hadron electrodynamic
• Radiative transitions of charmonium states in a constituent quark model
• Determination of the $g_{\rho \sigma \gamma }$ coupling constant through the process $\gamma +N\to N+V$ with circularly polarized photons
• Irreducible tensor approach to spin observables in photo production of mesons with arbitrary spin-parity $s^{\pi }$
• Scalar meson production in nucleon-nucleon collisions near threshold
• Assocative Photoproduction of Roper Resonance and $\omega$-Meson
• Exploration of hyperfine interaction between constituent quarks via eta productions
• Electroproduction of K* mesons at CLAS