D. A. Martiryan
A5035340113- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Nuclear physics research studies
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Atomic and Molecular Physics
- Nuclear reactor physics and engineering
- Astronomical and nuclear sciences
A. Alikhanyan National Laboratory
2019-2025
Photoproduction of charged pions pairs off protons is studied within the invariant masses final state hadrons from 1.6 to 2.4 GeV at Thomas Jefferson National Accelerator Facility with CLAS detector. The total and differential cross sections spin-density matrix elements are presented for isobars $p{\ensuremath{\rho}}^{0}(770), \mathrm{\ensuremath{\Delta}}{(1232)}^{++}{\ensuremath{\pi}}^{\ensuremath{-}}$, $\mathrm{\ensuremath{\Delta}}{(1232)}^{0}{\ensuremath{\pi}}^{+}$. data included in...
Experimental data on proton-induced neutron emission reactions in actinides are important for nuclear astrophysics, energy, and medical applications. Presently existing $(p,xn)$ thorium uranium at low energies range $({E}_{\mathrm{p}}<20\phantom{\rule{0.16em}{0ex}}\mathrm{MeV})$ som\cyrchar\cyre{}what scarce often contradict each other. In this work, the cross sections of $^{232}\mathrm{Th}(p,n)^{232}\mathrm{Pa}$, $^{232}\mathrm{Th}(p,3n)^{230}\mathrm{Pa}$,...
Photoproduction of charged pions pairs off protons is studied within the invariant masses final state hadrons from 1.6 to 2.4 GeV at Thomas Jefferson National Accelerator Facility with CLAS detector. The data are included in Bonn-Gatchina coupled-channel analysis and provide information necessary determine branching fractions for most known nucleon Delta resonances. Branching ratios obtained here an event based likelihood fit.
The main goal of this analysis is to study momentum (or kinetic energy) distribution the backward going protons using data from CLAS EG2 experiment at Jefferson Lab. In scattering a 5.014 GeV electron beam off various nucleus targets, ranging deuterium lead, have been recorded. includes selection events in reaction $ A(e, e^{\prime}, P_{back}) X $, where P_{back} proton scattered above 90° either lab coordinate frame or with respect direction interacting virtual photon, then performing...
The use of the method developed in CLAS collaboration (Jefferson Lab, USA) improving leptons momentum for more correct studies final state selection quasi-real photoproduction resulting from reaction to near threshold $J/\psi$ meson is described. radiation photons that were detected electromagnetic calorimeter studied with electrons and positrons accompanied them very narrow angles. radiated photon $e^+ e^- p^{\prime}(e^{\prime})$ given, where e^-$ lepton pair formed during decay meson.