منابع مشابه
Vector meson dominance and the ρ meson
We discuss the properties of vector mesons, in particular the ρ 0 , in the context of the Hidden Local Symmetry (HLS) model. This provides a unified framework to study several aspects of the low energy QCD sector. Firstly, we show that in the HLS model the physical photon is massless, without requiring off field diagonalization. We then demonstrate the equivalence of HLS and the two existing re...
متن کاملObservation of Ρ/ω Meson Modification in Nuclear Matter
We have measured invariant mass spectra of electron-positron pairs in the target rapidity region of 12GeV p+A reactions. We have observed a significant difference in the mass spectra below the ω meson between p+C and p+Cu interactions. The difference is interpreted as a signature of the ρ/ω Present Address: Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, ...
متن کاملRenormalization Group Analysis of ρ-Meson Properties at Finite Density
We calculate the density dependence of the ρ-meson mass and coupling constant(gρNN ) for ρ-nucleon-nucleon vertex at one loop using the lagrangian where the ρ-meson is included as a dynamical gauge boson of a hidden local symmetry. From the condition that thermodynamic potential should not depend on the arbitrary energy scale, renormalization scale, one can construct a renormalization group equ...
متن کاملMeson Condensations in High-Density Matter
Recent studies on meson condensations (pions and kaons) in high-density hadronic matter are reviewed. After summarizing onset mechanisms of pion and kaon condensations, we discuss implications for neutron star phenomena such as rapid cooling through neutrino emission, static and dynamic properties of neutron stars. Recent studies on coexistence problem of pion and kaon condensations are briefly...
متن کاملNew Results in ρ 0 Meson Physics
We compare the predictions of a range of existing models based on the Vector Meson Dominance hypothesis with data on e+e− → π+π− and e+e− → μ+μ− Permanent address. Present address. cross-sections and the phase and near-threshold behavior of the timelike pion form factor, with the aim of determining which (if any) of these models is capable of providing an accurate representation of the full ran...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1970
ISSN: 0033-068X
DOI: 10.1143/ptp.44.1706