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Search for Exclusive Z-Boson Production and Observation of High-Mass pp→pγγp -> pl+lp Events in pp Collisions at s√=1.96  TeV

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Vallecorsa, Sofia / Wu, Xin
Published in Physical Review Letters. 2009, vol. 102, no. 22, p. 222002
Abstract This Letter presents a search for exclusive Z boson production in proton-antiproton collisions at s√=1.96  TeV, using the CDF II detector. No exclusive Z→l+l− candidates are observed and the first upper limit on the exclusive Z cross section in hadron collisions is found to be σexcl(Z)<0.96  pb at 95% confidence level. In addition, eight candidate exclusive dilepton events from the process pp→pγγp→pl+l−p are observed, and a measurement of the cross section for Mll>40  GeV/c2 and |ηl|<4 is found to be σ=0.24+0.13−0.10  pb, which is consistent with the standard model prediction.
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CDF COLLABORATION. Search for Exclusive Z-Boson Production and Observation of High-Mass pp→pγγp -> pl+lp Events in pp Collisions at s√=1.96  TeV. In: Physical Review Letters, 2009, vol. 102, n° 22, p. 222002. https://archive-ouverte.unige.ch/unige:38555

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Deposited on : 2014-07-08

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