QCD sum-rules analysis of vector ( 1−− ) heavy quarkonium meson-hybrid mixing

Heavy Hybrid Meson Masses derived from QCD sum rules in Heavy Quark Effective Theory

QCD sum rules are derived for the heavy hybrid mesons with one heavy quark and JPC = 1−+, 0++, 1+−, 0−− in the leading order of heavy quark effective theory. We obatin the binding energy ΛH = (1.1±0.1), (1.51±0.10), (1.28±0.10), (1.5±0.1) GeV and decay constant fH = (0.205± 0.02), (0.415 ± 0.04), (0.217 ± 0.02), (0.317 ± 0.03)GeV 7 2 for 1−+, 0++, 1+−, 0−− respectively when the light quark is u...

Heavy-meson form factors from QCD sum rules.

A consistent framework is developed for studying hadronic form factors of heavy mesons using QCD sum rules in the heavy quark effective theory, including the-next-to-leading order renormalization group improvement. Sum rules are derived for the asymptotic value of the meson decay constant jp and for the universal Isgur-Wise form factor. It is shown that renormalization group effects considerabl...

Vector-meson-baryon coupling constants in QCD sum rules

Some decay modes of the 1−+ hybrid meson in QCD sum rules revisited

The pionic coupling constants in the decays of the 1−+ hybrid meson are calculated. The double Borel transformation is invoked and continuum contribution is subtracted. The decay widths of the processes 1−+ → ρπ, f1π, πγ are around 40, 100, 0.3 MeV respectively. Comparison is made with previous calculations using three point correlation functions. PACS number: 12.39.Mk

Scaling Relations in Phenomenology of QCD Sum Rules for Heavy Quarkonium

In the framework of a specific scheme of the QCD sum rules for S-wave levels of the heavy quarkonium, one derives expressions, relating the leptonic constants, the energetic density of quarkonium states and universal characteristics in the heavy quarkonium physics, such as the difference between the masses of heavy quark Q and meson (Qq̄) and the number of heavy quarkonium levels below the thres...