ρ-meson properties at finite nuclear density
نویسندگان
چکیده
منابع مشابه
Renormalization 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...
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The properties of π, η,K and K− mesons are studied in nuclear reactions from SIS to SPS energies within the covariant transport approach HSD in comparison to the experimental data. Whereas the pion, η and kaon abundancies and spectra indicate little or vanishing selfe-nergies for these mesons in the medium, antikaons (as well as antiprotons) are found to experience strong attractive potentials ...
متن کاملun 1 99 8 ρ - meson properties at finite nuclear density ∗
We calculate the momentum dependence of the ρ-meson selfenergy based on the dispersion relation for the ρN scattering amplitude f(ω) at low nuclear density. The imaginary part of f(ω) is determined from the optical theorem, while the total ρN cross section is obtained within the VDM at high energy and within the resonance model at low energy. Our numerical results indicate a sizeable broadening...
متن کاملl - th / 9 80 10 55 v 1 2 7 Ja n 19 98 ρ - meson properties at finite nuclear density ∗
We calculate the momentum dependence of the ρ-meson selfenergy based on the dispersion relation for the ρN scattering amplitude f(ω) at low nuclear density. The imaginary part of f(ω) is determined from the optical theorem, while the total ρN cross section is obtained within the VDM at high energy and within the resonance model at low energy. Our numerical results indicate a sizeable broadening...
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Results on elastic electroproduction of ρ mesons are presented for a photon virtuality in the range 1 < Q < 60 GeV and for a hadronic centre of mass energy in the range 30 < W < 140 GeV. The shape of the (ππ) mass distribution is discussed and measurements of the cross section dependences on Q, W and t (the four-momentum transfer squared to the proton) are presented. The full set of ̺ spin densi...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 1998
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.58.1078