Speaker
Thomas Rae
(The University of Southampton)
Description
We calculate the first two moments of the light-cone distribution amplitudes for the pseudoscalar mesons (pi and K) and the longitudinally polarised vector mesons (rho, K* and phi) as part of the UKQCD and RBC collaborations' N_f=2+1 domain-wall fermion phenomenology programme. These quantities were obtained with a good precision and, in particular, the expected effects of SU(3)-flavour symmetry breaking are observed. Operators are renormalised nonperturbatively and extrapolations to the physical point are made, guided by leading order chiral perturbation theory. The main results presented are for two volumes (16 and 24 cubed) with a common lattice spacing. Further to this, preliminary results for a lattice with a finer lattice spacing (32 cubed) will be discussed.
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Primary author
Thomas Rae
(The University of Southampton)
Co-authors
Dr
A. Juettner
(Johannes Gutenberg-University Mainz)
Prof.
C. T. C. Sachrajda
(The University of Southampton)
Dr
D. Broemmel
(The University of Southampton)
Prof.
J. M. Flynn
(The University of Southampton)
Dr
M. D. Donnellan
(DESY Zeuthen)
Dr
P. A. Boyle
(The University of Edinburgh)
Mr
R. Arthur
(The University of Edinburgh)
