QCD tests at CDF Page: 3 of 10
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QCD TESTS AT CDF
Fermi National Accelerator Laboratory,
P. O. Box 500, Batavia, IL 60510.
Presented on behalf of the CDF Collaboration.
IInd Rencontres du Vietnam,
International Conference on Particle Physics and Astrophysics,
Ho Chi Minh City, Vietnam, October 21-28, 1995.
Jet measurements at CDF provide the possibility of exploring new physics beyond the Standard
Model and supply a rich testing ground for the properties of QCD. Cross section measurements
at the highest available jet ET are potentially sensitive to the production of new particles or to
the presence of quark substructure; deviations from the QCD predictions may signal the onset
of new physics. Within the framework of conventional QCD, jet measurements can be used
to extract fundamental QCD parameters such as a8. Large datasets with good statistics over
a large kinematic range can be combined with the improved theoretical calculations to yield
precision tests (at the 10-20 % level) for both next-to-leading order (NLO) QCD matrix-element
calculations and Parton Shower (PS) models of QCD. Owing to the sensitivity of jet production
on the gluon distribution, these data provide direct constraints on the gluon distribution in the
range 10--3 x < .5.
Many QCD analyses are being pursued at CDF. Inclusive, two-jet and multijet dif-
ferential cross section and angular-distribution measurements test the detailed predictions of
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Kovacs, E. QCD tests at CDF, article, February 1, 1996; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc691177/m1/3/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.