Measurement of the combined rapidity and $p_T$ dependence of dijet azimuthal decorrelations in $p\bar{p}$ collisions at $\sqrt{s}=1.96$TeV

Abstract

We present the first combined measurement of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations, based on the recently proposed quantity $R_{\Delta \varphi }$. The variable $R_{\Delta \varphi }$ measures the fraction of the inclusive dijet events in which the azimuthal separation of the two jets with the highest transverse momenta is less than a specified value for the parameter $\Delta {\varphi }_{\max }$. The quantity $R_{\Delta \varphi }$ is measured in $p\bar{p}$ collisions at $\sqrt{s}=1.96$TeV, as a function of the dijet rapidity interval, the total scalar transverse momentum, and $\Delta {\varphi }_{\max }$. The measurement uses an event sample corresponding to an integrated luminosity of $0.7$fb${}^{-1}$ collected with the D0 detector at the Fermilab Tevatron Collider. The results are compared to predictions of a perturbative QCD calculation at next-to-leading order in the strong coupling with corrections for non-perturbative effects. The theory predictions describe the data, except in the kinematic region of large dijet rapidity intervals and large $\Delta {\varphi }_{\max }$.

9 pages, 3 figures, 4 tables, submitted to Phys. Lett. B

References in corpus (11)

• Parton distributions for the LHC
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• Implications of CTEQ global analysis for collider observables
• Measurement of the inclusive jet cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96\mathrm{TeV}$
• Measurement of the inclusive jet cross section in p pbar collisions at sqrt(s)=1.96 TeV
• Measurement of angular correlations of jets at sqrt(s)=1.96 TeV and determination of the strong coupling at high momentum transfers
• Measurement of the dijet invariant mass cross section in proton anti-proton collisions at sqrt{s} = 1.96 TeV
• Measurement of the combined rapidity and $p_T$ dependence of dijet azimuthal decorrelations in $p\bar{p}$ collisions at $\sqrt{s}=1.96$TeV
• Measurement of the ratio of three-jet to two-jet cross sections in pp-bar collisions at sqrt(s) = 1.96 TeV
• A new quantity for studies of dijet azimuthal decorrelations

Cited by in corpus (8)

• Measurement of dijet azimuthal decorrelation in pp collisions at sqrt(s) = 8 TeV
• Measurement of dijet azimuthal decorrelations in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector and determination of the strong coupling
• Azimuthal correlations for inclusive 2-jet, 3-jet, and 4-jet events in pp collisions at $\sqrt{s}=$ 13 TeV
• Measurement of the combined rapidity and $p_T$ dependence of dijet azimuthal decorrelations in $p\bar{p}$ collisions at $\sqrt{s}=1.96$TeV
• Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in pp collisions at $\sqrt{s}=$ 13 TeV
• Dijet azimuthal decorrelations for $\Delta {\varphi }_{\mathrm{dijet}}<2\pi /3$ in perturbative QCD
• Measurements of jet multiplicity and jet transverse momentum in multijet events in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• $\Delta \varphi$ and multi-jet correlations with CMS