Elsevier

Physics Letters B

Volume 313, Issues 3–4, 2 September 1993, Pages 509-519
Physics Letters B

An experimental study of γγ → hadrons at LEP

https://doi.org/10.1016/0370-2693(93)90026-EGet rights and content

Abstract

An analysis of γγ interactions has been performed using untagged hadronic data obtained by the ALEPH detector at LEP. The data show at low transverse momentum (pt) are well reproduced by a model based on the vector meson dominance mechinism (VDM). At high ptthrust the presence of hard scattering processes is demonstrated. This component is well described in shape and normalization by a QCD calculation.

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    Supported by CICYT, Spain.

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