Measurement of Associated Production of Z Bosons with Charm Quark Jets in p(p)over-bar Collisions at root s = 1.96 TeV

Abstract

We present the first measurements of the ratios of cross sections sigma(p (p) over bar -> Z + c jet)/sigma(p (p) over bar -> Z + jet) and sigma(p (p) over bar -> Z + jet)/sigma(p (p) over bar -> 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)(jet) > 20 GeV and pseudorapidity vertical bar eta(jet)vertical bar collisions collected with the D0 detector at the Fermilab Tevatron Collider at root s = 1.96 TeV.

The measurements show significant deviations from perturbative QCD calculations and predictions from various event generators.

Keywords

• Measurement
• Associated
• Production
• Bosons
• with
• Charm
• Quark
• Jets
• ppover-bar
• Collisions
• root
• 1.96
• TeV