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Measurement of associated production of Z bosons with charm quark jets in ppbar collisions at sqrt(s)=1.96 TeV

Abstract : We present the first measurements of the ratios of cross sections, \sigma(ppbar -> Z+c jet)/\sigma(ppbar -> Z+jet) and \sigma(ppbar -> Z+c jet)/\sigma(ppbar -> Z+b jet) for the associated production of a Z boson with at least one charm or bottom quark jet. Jets have transverse momentum p_{T}>20 GeV and pseudorapidity |\eta|<2.5. These cross section ratios are measured differentially as a function of jet and $Z$ boson transverse momenta, based on 9.7 fb^{-1} of ppbar collisions collected with the D0 detector at the Fermilab Tevatron Collider at sqrt(s) = 1.96 TeV. The measurements show significant deviations from perturbative QCD calculations and predictions from various event generators.
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http://hal.in2p3.fr/in2p3-00852412
Contributor : Emmanuelle Vernay <>
Submitted on : Wednesday, August 21, 2013 - 8:32:07 AM
Last modification on : Wednesday, September 16, 2020 - 4:23:21 PM

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V.M. Abazov, G. Sajot, J. Stark, S. Greder, F. Miconi, et al.. Measurement of associated production of Z bosons with charm quark jets in ppbar collisions at sqrt(s)=1.96 TeV. Physical Review Letters, American Physical Society, 2014, 112, pp.042001. ⟨10.1103/PhysRevLett.112.042001⟩. ⟨in2p3-00852412⟩

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