Measurement of dijet angular distributions at sqrt{s}=1.96TeV and searches for quark compositeness and extra spatial dimensions

Journal Article · Mon Jun 01 00:00:00 EDT 2009

OSTI ID:961950

Collaboration, D0

We present the first measurement of dijet angular distributions in p{bar p} collisions at {radical}s = 1.96 TeV at the Fermilab Tevatron Collider. The measurement is based on a dataset corresponding to an integrated luminosity of 0.7 fb{sup -1} collected with the D0 detector. Dijet angular distributions have been measured over a range of dijet masses, from 0.25 TeV to above 1.1 TeV. The data are in good agreement with the predictions of perturbative QCD and are used to constrain new physics models including quark compositeness, large extra dimensions, and TeV{sup -1} scale extra dimensions. For all models considered, we set the most stringent direct limits to date.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 961950
• Report Number(s): FERMILAB-PUB-09-326-E; arXiv eprint number arXiv:0906.4819; TRN: US0903524
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
DIMENSIONS
FERMILAB TEVATRON
LUMINOSITY
PHYSICS
QUANTUM CHROMODYNAMICS
QUARKS
Experiment-HEP