Role of in-medium hadrons in photon-nucleus reactions : shadowing and dilepton spectrum

Abstract

We study the effect of in-medium hadronic properties in photon nucleus interactions in the context of shadowing as well as the dilepton spectrum for incident photon energies in the range 1.1- 3 GeV. A reasonable agreement with the experimental data for shadowing is obtained in a scenario of downward spectral shift of the hadrons. We show that distinguishable features for in-medium changes of the hadronic properties can be observed experimentally through the dilepton spectrum by judicious choice of target nuclei and incident energy of photons.

arXiv comment20 pages,RevTex 16 eps files for figs

References in corpus (25)

• Current correlation functions, QCD sum rules and vector mesons in baryonic matter
• Rho Meson Propagation and Dilepton Enhancement in Hot Hadronic Matter
• Enhancement of low-mass dileptons in heavy-ion collisions
• Low-mass e+e- pair production in 158 A GeV Pb-Au collisions at the CERN SPS, its dependence on multiplicity and transverse momentum
• Nuclear Deep-Inelastic Lepton Scattering and Coherence Phenomena
• Dilepton Production at SPS Energies
• What QCD sum rules tell about the rho meson
• P-Wave Polarization of the $\rho$-Meson and the Dilepton Spectrum in Dense Matter
• Thermal Photons and Lepton Pairs from Quark Gluon Plasma and Hot Hadronic Matter
• Vector Mesons in Nuclear Medium -- an Effective Lagrangian Approach --
• Photoproduction of vector mesons off nucleons near threshold
• e^+e^- Pair Production from $\gamma$ A Reactions
• Observation of $\rho /\omega$ Meson Modification in Nuclear Matter
• Light Vector Mesons in Nuclear Matter
• Probing the Rho Spectral Function in Hot and Dense Nuclear Matter by Dileptons
• Rho-meson mass in light nuclei
• $\rho$-meson properties at finite nuclear density
• Photoabsorption on nuclei in the shadowing threshold region
• Nuclear shadowing and rho photoproduction
• Shadowing in the nuclear photoabsorption above the resonance region
• phi-meson in Nuclear Matter
• Nuclear shadowing at low photon energies
• Low energy onset of nuclear shadowing in photoabsorption
• $\rho$-mass Modification in $H{e}^3$ - a Signal of Restoration of Chiral Symmetry or Test for Nuclear Matter Models ?
• Shadowing in photo-production : role of in-medium hadrons