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High Energy Physics - Phenomenology

Title: Perturbative QCD Calculations of Total Cross Sections and Decay Widths in Hard Inclusive Processes

Abstract: A summary of the current understanding of methods of analytical higher order perturbative computations of total cross sections and decay widths in Quantum Chromodynamics is presented. As examples, the total cross section in electron positron annihilation, the hadronic decay rates of the tau lepton and Higgs boson up to O(\alpha_s^2) and O(\alpha_s^3) are considered. The evaluation of the four-loop QED \beta - function at an intermediate step of the calculation is briefly described. The problem of renormalization group ambiguity of perturbative results is considered and some of the existing prescriptions are discussed. The problem of estimation of theoretical uncertainty in perturbative calculations is briefly discussed.
Comments: 83 pages, LaTeX, Reviews of Modern Physics style, 14 figures plus figural equations (not included). Hard copy available upon request at levan@jet.uoregon.edu. To be published in Reviews of Modern Physics
Subjects: High Energy Physics - Phenomenology (hep-ph)
Journal reference: Rev.Mod.Phys. 68 (1996) 259-303
DOI: 10.1103/RevModPhys.68.259
Report number: Oregon University preprint OITS-556, September 1994, Revised, August 1995
Cite as: arXiv:hep-ph/9508351
  (or arXiv:hep-ph/9508351v1 for this version)

Submission history

From: Levan Surguladze [view email]
[v1] Tue, 22 Aug 1995 21:44:28 GMT (89kb)