# Axial Nucleon form factors from lattice QCD

Abstract : We present results on the nucleon axial form factors within lattice QCD using two flavors of degenerate twisted mass fermions. Volume effects are examined using simulations at two volumes of spatial length $L=2.1$ fm and $L=2.8$ fm. Cut-off effects are investigated using three different values of the lattice spacings, namely $a=0.089$ fm, $a=0.070$ fm and $a=0.056$ fm. The nucleon axial charge is obtained in the continuum limit and chirally extrapolated to the physical pion mass enabling comparison with experiment.
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Journal articles
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http://hal.in2p3.fr/in2p3-00544220
Contributor : Emmanuelle Vernay <>
Submitted on : Tuesday, December 7, 2010 - 3:07:27 PM
Last modification on : Thursday, November 19, 2020 - 12:58:50 PM

### Citation

C. Alexandrou, M. Brinet, J. Carbonell, M. Constantinou, P. A. Harraud, et al.. Axial Nucleon form factors from lattice QCD. Physical Review D, American Physical Society, 2011, 83, pp.045010. ⟨10.1103/PhysRevD.83.045010⟩. ⟨in2p3-00544220⟩

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