BLM scale fixing in event-shape distributions

The European Physical Journal C

Niklaus Häfliger¹  Thomas Gehrmann¹  Pier Francesco Monni² 

[1] Physik-Institut, Universität Zürich, Winterthurerstrasse 190, 8057 , Zurich, Switzerland;Physik-Institut, Universität Zürich, Winterthurerstrasse 190, 8057 , Zurich, Switzerland;Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, OX1 3NP, Oxford, UK;Institute for Particle Physics Phenomenology, University of Durham, DH1 3LE, Durham, UK;

关键词: Perturbative Expansion;    Renormalization Scale;    Vacuum Polarization;    Strong Coupling Constant;    Ghost Loop;   

DOI  :  10.1140/epjc/s10052-014-2896-1

来源: Springer

【 摘 要 】

We study the application of the Brodsky–Lepage–Mackenzie (BLM) scale-setting prescription to event-shape distributions in electron–positron collisions. The renormalization scale is set dynamically according to the BLM method. We study NLO predictions and we discuss extensions of the prescription to NNLO.

【 授权许可】

CC BY