English

Radiative Corrections to the Photon + 1 Jet Rate at LEP

High Energy Physics - Phenomenology 2008-11-26 v3 High Energy Physics - Experiment

Abstract

We present the results of a calculation of the rate for the annihilation of an e+ee^+e^- pair into a jet containing an energetic photon and a single further jet at order ααs\alpha \alpha_{s}. By comparing these results with the existing data on the photon + 1 jet rate from the ALEPH Collaboration, we make a first determination of the process independent quark-to-photon fragmentation function Dqγ(z,μF)D_{q \to \gamma}(z,\mu_{F}) at order ααs\alpha \alpha_{s}. We also compare our prediction for the inclusive photon energy spectrum with the recent OPAL measurement.

Keywords

Cite

@article{arxiv.hep-ph/9705305,
  title  = {Radiative Corrections to the Photon + 1 Jet Rate at LEP},
  author = {A. Gehrmann-De Ridder and T. Gehrmann and E. W. N. Glover},
  journal= {arXiv preprint arXiv:hep-ph/9705305},
  year   = {2008}
}

Comments

13 pages, LaTeX, 6 figures included; Discussion on resummation approaches and comparison to recent OPAL data on inclusive photon energy spectrum added; to appear in Phys.Lett.B