English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

A Study of Four-Jet Events and Search for Double Parton Interactions With the Collider Detector at Fermilab. (December 1992) Louis Joseph Keeble, B.Sc., Bristol University, Bristol, England; M.S., Texas A&M University, College Station, Texas Chair of Advisory Committee: Dr. Peter M. Mcintyre Ill Kinematic properties of four-jet events in pp collisions at V$ = 1.8 TeV are compared with the predictions of leading order quantum chromodynamics. Jets are clustered with a fixed cone algorithm using a cone size R = 0.7 where R = J D.:rP + D.tp2. Pseudo-rapidity TJ is defined by the relation TJ = -In tan(0/2), where 0 is the polar angle relative to the beam axis and ¢>is the azimuthal angle around this axis. A search for double parton interactions has resulted in an upper limit on the double parton scattering cross section of aop < 0.11 ph (95% C.L.) for partons with transverse momenta greater than 18 GeV fc. Defining the effective cross section O"eff through the equation <7DP = a3ijetf2aeff, the limits O"eff > 4.2 mb (95% C.L.) and O"eff > 5.6 mb (90% C.L.) have also been established, where <7dijet is the cross section for two-jet events. The implications of these results for physics at V$ = 20 TeV are discussed.

A Study of Four Jet Events and Search for Double Parton Interactions with the Collider Detector at Fermilab