Investigating in-medium properties of the $\omega$ meson via the $\omega \to {\pi }^0\gamma$ decay

Abstract

We investigate the feasibility of studying in-medium properties of the $\omega$ meson in photoproduction experiments via the decay $\omega \to {\pi }^0\gamma$. We use the GiBUU transport model to compare different methods of obtaining in-medium information, such as the invariant mass spectrum, transparency ratio, excitation function and momentum spectrum. We show that the final-state interaction of the pion poses a major obstacle for the interpretation of the invariant mass spectrum. The other three observables turn out to be fairly independent of final-state interactions and thus can give access to the $\omega$'s in-medium properties.

8 pages, 6 figures

References in corpus (9)

• Transport-theoretical Description of Nuclear Reactions
• Modification of the $\omega$-Meson Lifetime in Nuclear Matter
• Dilepton production in proton-induced reactions at SIS energies with the GiBUU transport model
• Inclusive $\omega$ photoproduction from nuclei and $\omega$ in the nuclear medium
• Omega attenuation in nuclei
• First measurement of low momentum dielectrons radiated off cold nuclear matter
• Experimental approaches for determining in-medium properties of hadrons from photo-nuclear reactions
• Photoproduction of $\omega$ mesons on nuclei near the production threshold
• Low energy ω(\to π^0 γ) meson photoproduction in the nucleus

Cited by in corpus (13)

• Meson-nucleus potentials and the search for meson-nucleus bound states
• Determination of the η'-nucleus optical potential
• Etaprime and Eta Mesons with Connection to Anomalous Glue
• Dilepton production and reaction dynamics in heavy-ion collisions at SIS energies from coarse-grained transport simulations
• A coarse-graining approach for dilepton production at SPS energies
• 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
• Photon and dilepton production at the Facility for Antiproton and Ion Research and the beam energy scan program at the Relativistic Heavy-Ion Collider using coarse-grained microscopic transport simulations
• Dilepton Radiation from Strongly Interacting Systems
• The η'-carbon potential at low meson momenta
• Energy, centrality and momentum dependence of dielectron production at collider energies in a coarse-grained transport approach
• Interactions of $\omega$-Mesons in Nuclear Matter and with Nuclei
• Dileptons in a coarse-grained transport approach