Published June 1991 | Version v1
Report Restricted

Renormalization scheme dependence and infrared behaviour in e+e- annihilations and τ-lepton decay at the next-to-next-to-leading order of perturbative QCD

Creators

  • 1. Ceskoslovenska Akademie Ved, Prague (Czechoslovakia). Fyzikalni Ustav
  • 2. Michigan Univ., Ann Arbor (USA). Randall Lab. of Physics
  • 3. AN SSSR, Moscow (USSR). Inst. Yadernykh Issledovanij

Description

We present a detailed investigation of the renormalization scheme dependence of the next-to-next-leading order QCD predictions for the processes e+e-→hadrons and τ→ντ+hadrons. The comparison of the results obtained in three frequently used approaches to resolving the renormalization scheme ambiguities with experimental data is carried out and special features of the approximants in the infrared and ultraviolet regions are analysed. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Files

Restricted

The record is publicly accessible, but files are restricted to users with access.

Additional details

Publishing Information

Imprint Pagination
21 p.
Report number
DESY--91-059

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
23003096
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
ANNIHILATION; BRANCHING RATIO; ELECTRON-POSITRON INTERACTIONS; HADRONS; INFRARED DIVERGENCES; MULTIPLE PRODUCTION; PARTICLE WIDTHS; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; RENORMALIZATION; SEMILEPTONIC DECAY; TAU PARTICLES; TOTAL CROSS SECTIONS; ULTRAVIOLET DIVERGENCES
Descriptors DEC
CROSS SECTIONS; DECAY; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; HEAVY LEPTONS; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; QUANTUM FIELD THEORY; WEAK PARTICLE DECAY