H. Marukyan
A5026987306- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Atomic and Molecular Physics
- Particle Accelerators and Free-Electron Lasers
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- Magnetic confinement fusion research
- Radiation Detection and Scintillator Technologies
- Photonic and Optical Devices
- Algebraic and Geometric Analysis
- Medical Imaging Techniques and Applications
- Astrophysics and Cosmic Phenomena
- Advancements in Photolithography Techniques
National and Kapodistrian University of Athens
2023-2024
Mississippi State University
2024
Ruhr University Bochum
2023
We report the total and differential cross sections for $J/\psi$ photoproduction with large acceptance GlueX spectrometer photon beam energies from threshold at 8.2~GeV up to 11.44~GeV over full kinematic range of momentum transfer squared, $t$. Such coverage facilitates extrapolation forward ($t = 0$) point beyond physical region. The section is used by many theoretical models plays an important role in understanding its relation $J/\psi-$proton interaction. These measurements near are also...
We measure for the first time differential photoproduction cross section $d\sigma/dt$ of $a_2(1320)$ meson at an average photon beam energy 8.5~GeV, using data with integrated luminosity 104~pb$^{-1}$ collected by GlueX experiment. fully reconstruct $\gamma p \to \eta\pi^0 p$ reaction and perform a partial-wave analysis in mass region amplitudes that incorporate linear polarization beam. This allows us to separate contributions natural- unnatural-parity exchanges. These measurements provide...
We report on the results of first search for production axion-like particles (ALPs) via Primakoff nuclear targets, γA→aA, in "SRC-CT" experiment using GlueX detector at Jefferson Lab. This uses an integrated luminosity 100 pb⋅−1nucleon a 12C target with real photon beam energies 6<Eγ<10.8 GeV, and explores mass region 200<ma<450 MeV decay a→γγ. range is between π0 η meson masses, which enables use measured rate to obtain absolute bounds ALP reduced sensitivity experimental detection...
The spin-exotic hybrid meson π1(1600) is predicted to have a large decay rate the ωππ final state. Using 76.6 pb−1 of data collected with GlueX detector, we measure cross sections for reactions γp→ωπ+π−p, γp→ωπ0π0p, and γp→ωπ−π0Δ++ in range Eγ=8–10 GeV. isospin conservation, set first upper limits on photoproduction π10(1600) π1−(1600). We combine these lattice calculations widths find that η′π most sensitive two-body system search π1(1600). locked icon Physics Subject Headings...
The GlueX experiment at Jefferson Lab studies photoproduction of mesons using linearly polarized 8.5GeV photons impinging on a hydrogen target which is contained within detector with near-complete coverage for charged and neutral particles. We present measurements spin-density matrix elements the vector meson ρ(770). statistical precision achieved exceeds that previous experiments in this energy range by orders magnitude. confirm high degree s-channel helicity conservation small squared...
We report the total and differential cross sections for $J/ψ$ photoproduction with large acceptance GlueX spectrometer photon beam energies from threshold at 8.2~GeV up to 11.44~GeV over full kinematic range of momentum transfer squared, $t$. Such coverage facilitates extrapolation forward ($t = 0$) point beyond physical region. The section is used by many theoretical models plays an important role in understanding its relation $J/ψ-$proton interaction. These measurements near are also...
We report the measurement of spin-density matrix elements $\Delta^{++}(1232)$ in photoproduction reaction $\gamma p \to \pi^-\Delta^{++}(1232)$ with GlueX experiment Hall D at Jefferson Lab. The used a linearly polarized photon beam $E_\gamma=8.2-8.8$~GeV and statistical precision exceeds previous from SLAC by three orders magnitude for momentum transfer squared region $-t < 1.4$ GeV$^2$. data are sensitive to previously undetermined relative sign between couplings existing Regge exchange...
The spin-exotic hybrid meson $\pi_{1}(1600)$ is predicted to have a large decay rate the $\omega\pi\pi$ final state. Using 76.6~pb$^{-1}$ of data collected with GlueX detector, we measure cross sections for reactions $\gamma p \to \omega \pi^+ \pi^- p$, \pi^0 and p\to\omega\pi^-\pi^0\Delta^{++}$ in range $E_\gamma =$ 8-10 GeV. isospin conservation, set first upper limits on photoproduction $\pi^{0}_{1}(1600)$ $\pi^{-}_{1}(1600)$. We combine these lattice calculations widths find that...
The COmpact detectoR for the Eic (CORE) Proposal was submitted to EIC "Call Collaboration Proposals Detectors". CORE comprehensively covers physics scope of Community White Paper and National Academies Science 2018 report. design exploits advances in detector precision granularity minimize size. central includes a 3Tesla, 2.5m solenoid. Tracking is primarily silicon. Electromagnetic calorimetry based on high performance crystals. Ring-imaging Cherenkov detectors provide hadronic particle...