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Title

Improved determination of the sample composition of dimuon events produced in pp collisions at √s=1.96 TeV

CollaborationWith : Clark, Allan Geoffrey / Garcia Navarro, Jose Enrique / Lister, Alison / Wu, Xin
Published in European Physical Journal. C. 2011, vol. 71, no. 1720
Abstract We use a new method to estimate with 5% accuracy the contribution of pion and kaon in-flight-decays to the dimuon data set acquired with the CDF detector. Based on this improved estimate, we show that the total number and the properties of the collected dimuon events are not yet accounted for by ordinary sources of dimuons which also include the contributions, as measured in the data, of heavy flavor, ϒ, and Drell–Yan production in addition to muons mimicked by hadronic punchthrough. The number of unaccounted events corresponds to (12.8±3.2)% of the bb production. We find that (23±6)% of the unaccounted events contain additional muon candidates. For comparison, this fraction is (6.9±0.4)% for events due to bb production
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CDF COLLABORATION. Improved determination of the sample composition of dimuon events produced in pp collisions at √s=1.96 TeV. In: European Physical Journal. C, 2011, vol. 71, n° 1720. https://archive-ouverte.unige.ch/unige:38749

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Deposited on : 2014-07-21

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