Lattice Results for Low Moments of Light Meson Distribution Amplitudes

As part of the UKQCD and RBC collaborations' N_f=2+1 domain-wall fermion phenomenology programme, we calculate the first two moments of the light-cone distribution amplitudes of the pseudoscalar mesons pion and kaon and the (longitudinally-polarised) vector mesons rho, K-star and phi. We obtain...

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Detalles Bibliográficos
Autores principales: Arthur, R, Boyle, P A, Brommel, D, Donnellan, M A, Flynn, J M, Juttner, A, Rae, T D, Sachrajda, C T.C
Lenguaje:eng
Publicado: 2010
Materias:
Particle Physics - Lattice
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.83.074505
http://cds.cern.ch/record/1310366
Descripción
Sumario:As part of the UKQCD and RBC collaborations' N_f=2+1 domain-wall fermion phenomenology programme, we calculate the first two moments of the light-cone distribution amplitudes of the pseudoscalar mesons pion and kaon and the (longitudinally-polarised) vector mesons rho, K-star and phi. We obtain the desired quantities with good precision and are able to discern the expected quark-mass dependence of SU(3)-flavour breaking effects. An important ingredient of the calculation is the nonperturbative renormalisation of lattice operators using the RI'/MOM technique.

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