The impact of chirally odd condensates on the rho meson
The impact of chirally odd condensates on the rho meson
Hilger, T.; Thomas, R.; Kämpfer, B.; Leupold, S.
Abstract
Based on QCD sum rules we explore the consequences of a scenario for the ρ meson, where the chiral symmetry breaking condensates are set to zero whereas the chirally symmetric condensates remain at their vacuum values. This clean-cut scenario causes a lowering of the ρ spectral moment by about 120 MeV. The complementarity of mass shift and broadening is discussed. A simple parametrization of the ρ spectral function leads to a width of about 280 MeV if no shift of the peak position is assumed.
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Physics Letters B 709(2012), 200
DOI: 10.1016/j.physletb.2012.02.007
Cited 21 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-16873