A lattice calculation of vector meson couplings to the vector and tensor currents using chirally improved fermions

Details A lattice calculation of vector meson couplings to the vector and tensor currents using chirally improved fermions A lattice calculation of vector meson couplings to the vector and tensor currents using chirally improved fermions

2003-06-05

arxiv.org/abs/hep-lat/0306006v2

Phys.Rev. D68 (2003) 054501

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 3 figures, one sentence removed

Scientific paper

10.1103/PhysRevD.68.054501

We present a quenched lattice calculation of $f_V^\perp/f_V$, the coupling of vector mesons to the tensor current normalized by the vector meson decay constant. The chirally improved lattice Dirac operator, which allows us to reach small quark masses, is used. We put emphasis on analyzing the quark mass dependence of $f_V^\perp/f_V$ and find only a rather weak dependence. Our results at the $\rho$ and $\phi$ masses agree well with QCD sum rule calculations and those from previous lattice studies.

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