Journal of High Energy Physics

, 2013:191 | Cite as

Light-cone distribution amplitudes for heavy-quark hadrons

  • Guido Bell
  • Thorsten Feldmann
  • Yu-Ming Wang
  • Matthew W.Y. Yip


We construct parametrizations of light-cone distribution amplitudes (LCDAs) for B-mesons and Λ b -baryons that obey various theoretical constraints, and which are simple to use in factorization theorems relevant for phenomenological applications in heavy-flavour physics. In particular, we find the eigenfunctions of the Lange-Neubert renormalization kernel, which allow for a systematic implementation of renormalization-group evolution effects for both B-meson and Λ b -baryon decays. We also present a new strategy to construct LCDA models from momentum-space projectors, which can be used to implement Wandzura-Wilczek-like relations, and which allow for a comparison with theoretical approaches that go beyond the collinear limit for the light-quark momenta in energetic heavy-hadron decays.


Heavy Quark Physics Renormalization Group Resummation QCD 


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Copyright information

© SISSA, Trieste, Italy 2013

Authors and Affiliations

  • Guido Bell
    • 1
  • Thorsten Feldmann
    • 2
  • Yu-Ming Wang
    • 3
    • 4
  • Matthew W.Y. Yip
    • 5
  1. 1.Rudolf Peierls Centre for Theoretical PhysicsUniversity of OxfordOxfordU.K.
  2. 2.Theoretische ElementarteilchenphysikUniversität SiegenSiegenGermany
  3. 3.Institut für Theoretische Physik E, RWTH AachenAachenGermany
  4. 4.Physik Department T31Technische Universität MünchenGarchingGermany
  5. 5.Institute for Particle Physics PhenomenologyDurham UniversityDurhamU.K.

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