Energy-weighted sum rules for mesons in hot and dense matter
نویسندگان
چکیده
منابع مشابه
Valid QCD sum rules for vector mesons in nuclear matter.
QCD sum rules for vector mesons (ρ, ω, φ) in nuclear matter are reexamined with an emphasis on the reliability of various sum rules. Monitoring the continuum contribution and the convergence of the operator product expansion plays crucial role in determining the validity of a sum rule. The uncertainties arising from less than precise knowledge of the condensate values and other input parameters...
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L. Tolós,1,* R. Molina,2 E. Oset,2 and A. Ramos3 1Theory Group KVI, University of Groningen, Zernikelaan 25, NL-9747 AA Groningen, The Netherlands 2Instituto de Fı́sica Corpuscular (Centro Mixto CSIC-UV), Institutos de Investigación de Paterna, Apartado 22085, ES-46071 Valencia, Spain 3Departament d’Estructura i Constituents de la Matèria i Institut de Ciències del Cosmos. Facultat de Fı́sica. Un...
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We will summarize the progress in understanding the changes in the vector meson spectral density in nuclear medium using the constraint equations obtained from the Borel transformed dispersion relation and QCD Operator Product Expansion. We will discuss the results for the scalar mass shift and dispersion effects (three momentum dependence) for the light quark system (ρ, ω), the strange quark s...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2009
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.80.045201