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Parton Distribution Amplitudes and Non-Perturbative Renormalisation

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arxiv 0810.1669 v1 pith:IEHMBCZY submitted 2008-10-09 hep-lat

Parton Distribution Amplitudes and Non-Perturbative Renormalisation

P. A. Boyle , D. Br\"ommel , M. A. Donnellan , J. M. Flynn , A. J\"uttner , C. T. Sachrajda (for the RBC/UKQCD Collaborations) This is my paper
classification hep-lat
keywords amplitudesdistributionmesonsnon-perturbativerenormalisationresultsactionaddition
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present results for the first two moments of the light-cone distribution amplitudes of the pion and kaon pseudo-scalar mesons and of the rho, K* and phi vector mesons. The calculations are performed on the RBC/UKQCD collaborations' ensembles generated with the Iwasaki gauge action and with 2+1 flavours of domain wall fermions. In addition we also provide some results on the necessary non-perturbative renormalisation which we perform using the Rome-Southampton method. We discuss the benefits of the momentum source approach such as much smaller statistical errors and the possibility to see effects of the discretisation.

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