Nucleon distribution amplitudes and proton decay matrix elements on the lattice

URN to cite this document:: urn:nbn:de:bvb:355-epub-135525
DOI to cite this document:: 10.5283/epub.13552

Braun, Vladimir M. ; Göckeler, Meinulf ; Horsley, Roger ; Kaltenbrunner, Thomas ; Nakamura, Yoshifumi ; Pleiter, Dirk ; Rakow, Paul E. L ; Schäfer, Andreas ; Schierholz, Gerrit ; Stüben, Hirnnerk ; Warkentin, Nikolaus ; Zanotti, James M.

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Date of publication of this fulltext: 15 Mar 2010 13:23

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Abstract

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. ...