Measurement of Associated Production of Z Bosons with Charm Quark Jets in pp¯ Collisions at s=1.96TeV

V. M. Abazov et al. (The D0 Collaboration)
Phys. Rev. Lett. 112, 042001 – Published 27 January 2014

Abstract

We present the first measurements of the ratios of cross sections σ(pp¯Z+cjet)/σ(pp¯Z+jet) and σ(pp¯Z+cjet)/σ(pp¯Z+bjet) for the associated production of a Z boson with at least one charm or bottom quark jet. Jets have transverse momentum pTjet>20GeV and pseudorapidity |ηjet|<2.5. These cross section ratios are measured differentially as a function of jet and Z boson transverse momenta, based on 9.7fb1 of pp¯ collisions collected with the D0 detector at the Fermilab Tevatron Collider at s=1.96TeV. The measurements show significant deviations from perturbative QCD calculations and predictions from various event generators.

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  • Received 20 August 2013

DOI:https://doi.org/10.1103/PhysRevLett.112.042001

© 2014 American Physical Society

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Vol. 112, Iss. 4 — 31 January 2014

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