Elsevier

Nuclear Physics B

Volume 303, Issue 4, 11 July 1988, Pages 569-606
Nuclear Physics B

Three-jet events at the CERN intersecting storage rings

https://doi.org/10.1016/0550-3213(88)90421-XGet rights and content

Abstract

Three-jet events have been observed in pp collisions at s = 62.3 GeV. The data were collected using a total neutral energy trigger with a threshold at 25 GeV. These events appear predominantly as two jets, with some appearing as three jets. A novel analysis for the extraction of 2-jet and 3-jet events is described, and some of the event properties are discussed. The relative numbers of two- and three-jet events are studied within the framework of leading-order QCD, and yield a value of αs(K3/K2) = 0.19 ± 0.02 (stat.) ± 0.04 (syst.).

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