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26 April 2024 |
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Article overview
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Structure of the Pion from Full Lattice QCD | | D. Brömmel
; M. Diehl
; M. Göckeler
; Ph. Hägler
; R. Horsley
; D. Pleiter
; P.E.L. Rakow
; A. Schäfer
; G. Schierholz
; J.M. Zanotti
; | | Date: |
26 Sep 2005 | | Subject: | hep-lat | | Affiliation: | QCDSF/UKQCD Collaboration | | Abstract: | Moments of generalised parton distributions can be related to off-forward matrix elements of local operators. We calculate a few of the leading twist matrix elements for the pion on the lattice. The simulations are performed using two flavours of dynamical fermions and a range of pion masses from 550 to 1090 MeV. Our lattice spacings and spatial volumes lie in the range 0.07-0.12 fm and (1.6-2.2 fm)^3, respectively. Key features of our investigation are the use of O(a) improved Wilson fermions and non-perturbative renormalisation. We present first results for the two lowest moments of the generalised parton distributions of the pion and compare the pion electromagnetic form factor F_pi to experimental data. Good agreement is found between lattice data and experiment. | | Source: | arXiv, hep-lat/0509133 | | Services: | Forum | Review | PDF | Favorites | |
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