Ablikim, M
CDF
Jet Production
DN/DCHI
Max results
Sort by Reverse order

Showing 3 of 3 results

rivet Analysis
Measurement of dijet angular distributions at CDF

The CDF collaboration Abe, F. ; Akimoto, H. ; Akopian, A. ; et al.
Phys.Rev.Lett. 77 (1996) 5336-5341, 1996.
Inspire Record 423414 DOI 10.17182/hepdata.54980

We have used 106 pb~-1 of data collected in proton-antiproton collisions at sqrt(s)=1.8 TeV by the Collider Detector at Fermilab to measure jet angular distributions in events with two jets in the final state. The angular distributions agree with next to leading order (NLO) predictions of Quantum Chromodynamics (QCD) in all dijet invariant mass regions. The data exclude at 95% confidence level (CL) a model of quark substructure in which only up and down quarks are composite and the contact interaction scale is Lambda_ud(+) < 1.6 TeV or Lambda_ud(-) < 1.4 TeV. For a model in which all quarks are composite the excluded regions are Lambda(+) < 1.8 TeV and Lambda(-) < 1. 6 TeV.

2 data tables
Table 1

No description provided.

Table 2

Di-jet angular ratio, defined as the number with CHI < 2.5 divided by the number with CHI between 2.5 and 5.


rivet Analysis
Further Properties of High-Mass Multijet Events at the Fermilab Proton-Antiproton Collider

The CDF collaboration Abe, F. ; Akimoto, H. ; Akopian, A. ; et al.
Phys.Rev.D 54 (1996) 4221-4233, 1996.
Inspire Record 418504 DOI 10.17182/hepdata.52862

The properties of high-mass multijet events produced at the Fermilab proton-antiproton collider are compared with leading order QCD matrix element predictions, QCD parton shower Monte Carlo predictions, and the predictions from a model in which events are distributed uniformly over the available multibody phase-space. Multijet distributions corresponding to (4N-4) variables that span the N-body parameter space are found to be well described by the QCD calculations for inclusive three-jet, four-jet, and five-jet events. The agreement between data, QCD Matrix Element calculations, and QCD parton shower Monte Carlo predictions suggests that 2 -> 2 scattering plus gluon radiation provides a good first approximation to the full LO QCD matrix element for events with three, four, or even five jets in the final state.

25 data tables
Table 1

3-jet mass distribution.

Table 2

Inclusive 3-jet Dalitz X3 distribution.

Table 3

Inclusive 3-jet Dalitz X4 distribution.

More…

The Dijet angular distribution in p anti-p collisions at s**(1/2) = 1.8-TeV

The CDF collaboration Abe, F. ; Amidei, Dante E. ; Anway, Carol E. ; et al.
Phys.Rev.Lett. 69 (1992) 2896-2900, 1992.
Inspire Record 336778 DOI 10.17182/hepdata.19809

The dijet angular distribution is measured in the Collider Detector at Fermilab. This measurement covers higher mass ranges and larger scattering angles than previously possible. Good agreement is observed between the data and both leading-order [O(αs2)] and next-to-leading order [O(αs3)] QCD calculations. A limit on quark compositeness of Λc>1.0 TeV is obtained.

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.