2008

Nucleon distribution amplitudes and proton decay matrix elements on the lattice

Braun, V. M., Göckeler, M., Horsley, R. et al.

Understand

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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