On BLM scale fixing in exclusive processes

Details On BLM scale fixing in exclusive processes On BLM scale fixing in exclusive processes

2004-11-30

arxiv.org/abs/hep-ph/0411408v3

Eur.Phys.J.C42:163-168,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

accepted for the publication in Eur.Phys.J.C

Scientific paper

10.1140/epjc/s2005-02289-6

We discuss the BLM scale fixing procedure in exclusive electroproduction processes in the Bjorken regime. We show that in the case of vector meson production the usual way to aplly the BLM method fails due to singularities present in equations fixing the BLM scale. We argue that the BLM scale should be extracted from the squared amplitudes which are directly related to observables.

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