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On BLM scale fixing in exclusive processes

  • I. V. Anikin
  • B. Pire
  • L. Szymanowski
  • O. V. Teryaev
  • S. Wallon
Theoretical Physics

Abstract.

We discuss the BLM scale fixing procedure in exclusive electroproduction processes in the Bjorken regime with rather large xB. We show that in the case of vector meson production dominated in this case by quark exchange the usual way to apply the BLM method fails due to singularities present in the equations fixing the BLM scale. We argue that the BLM scale should be extracted from the squared amplitudes which are directly related to observables.

Keywords

Field Theory Elementary Particle Quantum Field Theory Particle Acceleration Vector Meson 
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Copyright information

© Springer-Verlag Berlin/Heidelberg 2005

Authors and Affiliations

  • I. V. Anikin
    • 1
    • 4
  • B. Pire
    • 2
  • L. Szymanowski
    • 3
    • 5
  • O. V. Teryaev
    • 1
  • S. Wallon
    • 4
  1. 1.Bogoliubov Laboratory of Theoretical PhysicsJINRDubnaRussia
  2. 2.CPHT (Unité mixte 8627 du CNRS.)École PolytechniquePalaiseauFrance
  3. 3.Soltan Institute for Nuclear StudiesWarsawPoland
  4. 4.LPT (Unité mixte 8627 du CNRS.)Université Paris-SudOrsayFrance
  5. 5.Phys. Théor. Fondam., Inst. de PhysiqueUniv. de LiégeLiégeBelgium

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