First Results from The GlueX Experiment

Abstract

The GlueX experiment at Jefferson Lab ran with its first commissioning beam in late 2014 and the spring of 2015. Data were collected on both plastic and liquid hydrogen targets, and much of the detector has been commissioned. All of the detector systems are now performing at or near design specifications and events are being fully reconstructed, including exclusive production of ${\pi }^0$, $\eta$ and $\omega$ mesons. Linearly-polarized photons were successfully produced through coherent bremsstrahlung and polarization transfer to the $\rho$ has been observed.

arXiv comment8 pages, 6 figures, Invited contribution to the Hadron 2015 Conference, Newport News VA, September 2015

References in corpus (5)

• Hybrid Mesons
• Toward the excited isoscalar meson spectrum from lattice QCD
• Isoscalar meson spectroscopy from lattice QCD
• The GlueX Central Drift Chamber: Design and Performance
• A measurement of the energy and timing resolution of GlueX Forward Calorimeter using an electron beam

Cited by in corpus (34)

• The $XYZ$ states: experimental and theoretical status and perspectives
• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• Exotics: Heavy Pentaquarks and Tetraquarks
• Three-body Unitarity with Isobars Revisited
• Searching in the dark: the hunt for the dark photon
• Light isovector resonances in ${\pi }^{-}p\to {\pi }^{-}{\pi }^{-}{\pi }^{+}p$ at 190 GeV/$c$
• Measurement of the beam asymmetry $\Sigma$ for ${\pi }^0$ and $\eta$ photoproduction on the proton at $E_{\gamma }=9$ GeV
• Finite-Energy Sum Rules in Eta Photoproduction off the Nucleon
• How the axial anomaly controls flavor mixing among mesons
• Strong and radiative decays of excited vector mesons and predictions for a new $\varphi (1930)$ resonance
• Vector Meson Photoproduction with a Linearly Polarized Beam
• Design and construction of a high-energy photon polarimeter
• CP-violating decays of the pseudoscalars eta and eta' and their connection to the electric dipole moment of the neutron
• Mass Calculations of Light Quarkonium, Exotic $J^{PC}=0^{+-}$ Hybrid Mesons from Gaussian Sum-Rules
• Phenomenology of pseudotensor mesons and the pseudotensor glueball
• Bounds on rare decays of $\eta$ and ${\eta }^{\prime }$ mesons from the neutron EDM
• Exclusive tensor meson photoproduction
• New analysis of $\eta \pi$ tensor resonances measured at the COMPASS experiment
• Light-quarkonium spectra and orbital-angular-momentum decomposition in a Bethe-Salpeter-equation approach
• Bound states in the B-matrix formalism for the three-body scattering
• Features of $\pi \Delta$ Photoproduction at High Energies
• Estimating the Color Lifetime of Energetic Quarks
• Phenomenology of $J^{PC}=3^{--}$ tensor mesons
• Machine Learning for Imaging Cherenkov Detectors
• From well-known tensor mesons to yet unknown axial-tensor mesons
• Tensor meson couplings in AdS/QCD
• Constraints imposed by the partial wave amplitudes on the decays of $J=1,2$ mesons
• Modelling glueballs
• The GlueX DIRC Program
• Relating CP-violating decays to the neutron EDM
• Excited vector mesons: phenomenology and predictions for a yet unknown vector $s\bar{s}$ state with a mass of about 1.93 GeV
• Reggeized model for $\gamma p\to {\rho }^{-}{\Delta }^{++}(1232)$ photoproduction
• K-Long Facility for JLab and its Scientific Potential
• Conventional mesons below 2 GeV