CDF Two Jet Analyses

In 1989-1990 CDF showed that dijet angular distribution, two-jet mass distribution, and doubly differential cross-section (wrt eta-1 and eta-2) are consistent with LO QCD for Mjj up to about 500 GeV. In 1992 the angular distribution was shown to be in good agreement with NLO QCD for two-jet masses up to and in excess of 550 GeV. In 1993 the two-jet mass distribution was measured up to about 1000 GeV and shown to be in reasonable agreement with NLO QCD for both cone sizes of 1.0 and 0.7. The agreement was somewhat better for the 1.0 cone size. In 1993 and 1995 the run 1 two-jet mass distribution was shown to be well described by a smooth parametrization -> no evidence for axigluons, excited quarks etc. Also in 1995, the run 1 angular distribution was shown to be well described by NLO QCD for two-jet masses up to and beyond 625 GeV, an important result given the observed excess in the inclusive jet spectrum at high-Et.

Dijet Angular Distribution c.f. LO QCD: _______________ PRL 62, 3020 (1989)
Two-Jet Differential Cross-Section c.f. LO QCD: ______ PRL 64, 157 (1990)
Two-Jet Mass Distribution c.f. LO QCD: ______________ PRD 41, 1722 (1990)
Dijet Angular Distribution c.f. NLO QCD: ______________ PRL 69, 2896 (1992)
Two-Jet Mass Distribution c.f. NLO QCD: _____________ PRD 48, 998 (1993)
Dijet Bump Search: __________________________________ PRL 71, 2542 (1993)
Dijet Bump Search: __________________________________ PRL 74, 3538 (1995)
Run 1A+1B Angular Distribution c.f. NLO QCD: ________ SUBMITTED

Currently Active People: Chao Wei, Rob Harris, Eve Kovacs, Bjoern Hinrichsen, Rob Plunkett, Masa Okabe

Run 1A+1B Mass Distribution c.f. NLO QCD _________ ONGOING

Run 1A Doubly Differential Cross-Section ___________ GODPARENTING

Run 1B Doubly Differential Cross-Section ___________ ONGOING

Extraction of Alpha_s: _____________________________ ONGOING

Same-side/Opposite-side Ratio _____________________ ONGOING