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Title

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

CollaborationWith : Achard, Pablo / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Delmeire, Evelyne / Echenard, Bertrand / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Natale, Sonia / Pohl, Martin / Straessner, Arno
Published in Physics Letters. B. 2005, vol. 613, no. 3-4, p. 118-127
Abstract The double-radiative process e+e−→Zγγ→qqγγ where the two hard photons escape detection at low polar angles into opposite directions, is studied in 0.62 fb−1 of data collected with the L3 detector at LEP at centre-of-mass energies between 188.6 and 209.2 GeV. The cross sections are measured and found to be consistent with the Standard Model expectations.
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L3 COLLABORATION. Z-boson production with two unobserved, back-to-back, hard photons at LEP. In: Physics Letters. B, 2005, vol. 613, n° 3-4, p. 118-127. https://archive-ouverte.unige.ch/unige:42200

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Deposited on : 2014-11-27

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