Z-boson production with two unobserved, back-to-back, hard photons at LEP

Details Z-boson production with two unobserved, back-to-back, hard photons at LEP Z-boson production with two unobserved, back-to-back, hard photons at LEP

2005-04-08

arxiv.org/abs/hep-ex/0504015v1

Phys.Lett.B613:118-127,2005

Physics

High Energy Physics

High Energy Physics - Experiment

Scientific paper

10.1016/j.physletb.2005.03.039

The double-radiative process e+e- -> Z gamma gamma -> q q~ gamma gamma, where
the two hard photons escape detection at low polar angles into opposite
directions, is studied in 0.62/fb of data collected with the L3 detector at LEP
at centre-of-mass energies between 188.6GeV and 209.2GeV. The cross sections
are measured and found to be consistent with the Standard Model expectations.

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