A Study of Hadronic Backgrounds to Isolated Hard Photon Production with L3

Details A Study of Hadronic Backgrounds to Isolated Hard Photon Production with L3 A Study of Hadronic Backgrounds to Isolated Hard Photon Production with L3

1995-05-24

arxiv.org/abs/hep-ex/9505012v1

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages

Scientific paper

I describe two methods for studying hadronic backgrounds to prompt photon production with L3, and compare the observed background rates with Monte Carlo predictions. I find that the Monte Carlo models JETSET and HERWIG underestimate the production of isolated neutral hadrons in hadronic Z decays at LEP. By extrapolating results obtained with L3, I estimate that the rate of prompt-photon + jet background to a H -> gamma gamma search at the LHC will be larger than Monte Carlo predictions by a factor of 1.5-2.5.

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