https://doi.org/10.1140/epjc/s10052-012-2265-x
Regular Article - Theoretical Physics
Power corrections in the dispersive model for a determination of the strong coupling constant from the thrust distribution
1
Institut für Theoretische Physik, Universität Zürich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
2
Institute for Particle Physics Phenomenology, Science Laboratories, University of Durham, South Rd, Durham, DH1 3LE, UK
3
Max-Planck-Institut für Physik, Föhringer Ring 6, 80805, München, Germany
* e-mail: pfmonni@physik.uzh.ch
Received:
6
November
2012
Revised:
5
December
2012
Published online:
15
January
2013
In the context of the dispersive model for non-perturbative corrections, we extend the leading renormalon subtraction to NNLO for the thrust distribution in e
+
e
− annihilation. Within this framework, using a NNLL+NNLO perturbative description and including bottom-quark mass effects to NLO, we analyse data in the centre-of-mass energy range 
in view of a simultaneous determination of the strong coupling constant and the non-perturbative parameter α
0. The fits are performed by matching the resummed and fixed-order predictions both in the R and the log-R matching schemes. The final values in the R scheme are 
, 
.
© Springer-Verlag Berlin Heidelberg and Società Italiana di Fisica, 2013
