Braun, Vladimir M. and Göckeler, Meinulf and Horsley, Roger and Kaltenbrunner, Thomas and Nakamura, Yoshifumi and Pleiter, Dirk and Rakow, Paul E. L and Schäfer, Andreas and Schierholz, Gerrit and Stüben, Hirnnerk and Warkentin, Nikolaus and Zanotti, James M.
Nucleon distribution amplitudes and proton decay matrix elements on the lattice.
Physical Review D 79 (3), 034504.
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Baryon distribution amplitudes (DAs) are crucial for the theory of hard exclusive reactions. We present a calculation of the first few moments of the leading-twist nucleon DA within lattice QCD. In addition we deal with the normalization of the next-to-leading (twist-four) DAs. The matrix elements determining the latter quantities are also responsible for proton decay in grand unified theories. ...
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