Scaling violations in inclusive e+e annihilation spectra

C. Peterson, D. Schlatter, I. Schmitt, and P. M. Zerwas
Phys. Rev. D 27, 105 – Published 1 January 1983
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Abstract

The origin of the observed scaling violations in inclusive e+e annihilation is investigated. Perturbative jet evolution is not necessarily the only reason for scale breaking in the hadron spectra at present energies. Remnants of finite-transverse-momentum and mass effects are still important in nonperturbative, cascade-type, jet formation in the ∼10 GeV range. Heavy-quark fragmentation has a strong impact on hadronic inclusive spectra. A simple parametrization for the heavy-quark fragmentation function is given which describes well recently measured charmed-meson spectra. Taking these effects into account, good agreement with the observed scaling violations is obtained in cascade-type jet models with hard-gluon bremsstrahlung.

  • Received 29 July 1982

DOI:https://doi.org/10.1103/PhysRevD.27.105

©1983 American Physical Society

Authors & Affiliations

C. Peterson*, D. Schlatter, I. Schmitt, and P. M. Zerwas

  • Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305

  • *On leave from NORDITA, Copenhagen, Denmark.
  • On leave from Universität Wuppertal, West Germany.
  • On leave from Technische Hochschule Aachen, West Germany.

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Vol. 27, Iss. 1 — 1 January 1983

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