Abstract
We present results for the couplings of light vector mesons to vector and tensor currents and on the low moments of the light-cone distribution amplitudes of the pion and kaon. The calculations are performed on the RBC and UKQCD collaborations' ensembles generated with the Iwasaki gauge action and with 2+1 flavours of domain wall fermions. The (preliminary) results for the ratios of the couplings of the vector meson to the vector and tensor currents (f_V and f^T_V respectively) in the MSbar scheme at 2GeV are: f_\rho^T/f_\rho=0.681(20); f_{K^\ast}^T/f_{K^\ast}=0.712(11) and f_\phi^T/f_\phi=0.751(9). For the first moment of the kaon's distribution amplitude we find (in the same scheme and at the same scale) _K=0.029(2) and for the second moment _\pi=0.28(3) and _K=0.27(2).
| Original language | English |
|---|---|
| Article number | 369 |
| Journal | Proceedings of Science |
| Volume | 2007 |
| Issue number | LATTICE 200 |
| Publication status | Published - 3 Oct 2007 |
Keywords / Materials (for Non-textual outputs)
- hep-lat
Fingerprint
Dive into the research topics of 'Lattice Results for Vector Meson Couplings and Parton Distribution Amplitudes'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver