Title
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Measurement of the inclusive Z cross section via decays to tau pairs in pp collisions at = 7 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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The first measurement of inclusive Z → τ + τ − production in pp collisions at the LHC is presented, in the final states μ + hadrons, e + hadrons, e + μ, and μ + μ. The data sample corresponds to an integrated luminosity of 36 pb−1 collected with the CMS detector. The measured cross section is σ (pp → ZX) × B (Z → τ + τ −) = 1.00 ± 0.05(stat.) ± 0.08(syst.) ± 0.04(lumi.)nb, which is in good agreement with the next-to-next-to-leading order QCD prediction and improves on previous measurements in the Z → e+e− and μ + μ − channels. The reconstruction efficiency for hadronic τ decays is determined with a precision of 7%. |
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Language
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English
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Source (journal)
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Journal of high energy physics. - Bristol
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Publication
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Bristol
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2011
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ISSN
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1126-6708
1029-8479
[online]
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DOI
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10.1007/JHEP08(2011)117
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Volume/pages
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8
(2011)
, p. 1-32
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Article Reference
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117
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ISI
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000294901200044
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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