Photoproduction of the $\omega$ meson off the proton near threshold

Abstract

An experimental study of $\omega$ photoproduction on the proton was conducted by using the Crystal Ball and TAPS multiphoton spectrometers together with the photon tagging facility at the Mainz Microtron MAMI. The $\gamma p\to \omega p$ differential cross sections are measured from threshold to the incident-photon energy $E_{\gamma }=1.40$ GeV ($W=1.87$ GeV for the center-of-mass energy) with 15-MeV binning in $E_{\gamma }$ and full production-angle coverage. The quality of the present data near threshold gives access to a variety of interesting physics aspects. As an example, an estimation of the $\omega N$ scattering length ${\alpha }_{\omega p}$ is provided.

8 pages, 5 figures. Published version; some typos were fixed

References in corpus (9)

• Extended Partial-Wave Analysis of piN Scattering Data
• In-medium nuclear interactions of low-energy hadrons
• Upgrade of the Glasgow photon tagging spectrometer for Mainz MAMI-C
• Study of the gp-->etap reaction with the Crystal Ball detector at the Mainz Microtron(MAMI-C)
• Modification of the $\omega$-Meson Lifetime in Nuclear Matter
• Nucleon-Meson Coupling Constants and Form Factors in the Quark Model
• Comments on differential cross section of phi-meson photoproduction at threshold
• Experimental constraints on the $\omega$-nucleus real potential
• Dynamical coupled channel calculation of pion and omega meson production

Cited by in corpus (20)

• Meson-nucleus potentials and the search for meson-nucleus bound states
• Light Baryon Spectroscopy
• Comparative analysis of $\omega p$, $\varphi p$, and $J/\psi p$ scattering lengths from A2, CLAS, and GlueX threshold measurements
• Determination of the real part of the η'-Nb optical potential
• Momentum dependence of the imaginary part of the $\omega$- and ${\eta }^{\prime }$-nucleus optical potential
• J/$\psi$p Scattering Length from GlueX Threshold Measurements
• The ${\psi }^{(\ast )}p$ scattering length based on near-threshold charmoniums photoproduction
• Extraction of Proton Trace Anomaly Energy from Near-Threshold $\varphi$ and $J/\psi$ photo-productions
• Proton and deuteron mass radii from near-threshold $\varphi$-meson photoproduction
• The reaction $\pi N\to \omega N$ in a dynamical coupled-channel approach
• First extraction of the proton mass radius and scattering length $\left|{\alpha }_{{\rho }^{0}p}\right|$ from ${\rho }^0$ photoproduction
• Extraction of $\omega$n, $\omega$p and $\varphi$N scattering lengths from $\omega$ and $\varphi$ differential photoproduction cross sections on the deuterium target
• Gravitational form factors of the proton from near-threshold vector meson photoproduction
• Backward-Angle ($u$-channel) Production at an Electron-Ion Collider
• Analysis of the interaction between $\varphi$ meson and nucleus
• Vector meson-nucleon scattering length $|{\alpha }_{VN}|$ and trace anomalous energy contribution to the nucleon mass $T_A$
• Probing Quantum Phenomena through Photoproduction in Relativistic Heavy-Ion Collisions
• High Energy Behaviour of Light Meson Photoproduction
• Threshold Upsilon-meson Photoproduction at EIC and EicC
• First Extraction of the $\varphi$-${}^4\mathrm{He}$ scattering length from near-threshold $\varphi$ photoproduction on helium-4