Radiative Corrections to the Photon + 1 Jet Rate at LEP
arXiv:hep-ph/9705305 · doi:10.1016/S0370-2693(97)01186-6
Abstract
We present the results of a calculation of the rate for the annihilation of an $e^+e^-$ pair into a jet containing an energetic photon and a single further jet at order $αα_{s}$. 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 $D_{q \to γ}(z,μ_{F})$ at order $αα_{s}$. We also compare our prediction for the inclusive photon energy spectrum with the recent OPAL measurement.
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