Abstract
We examine available experimental distributions of transverse energy and transverse momentum, obtained at the CERN pp-bar collider, in the context of quantum chromodynamics. We consider the following. (i) The hadronic transverse energy released during W/sup + -/ production. This hadronic transverse energy is made out of two components: a soft component which we parametrize using minimum-bias events and a semihard component which we calculate from QCD. (ii) The transverse momentum of the produced W/sup + -/. If the transverse momentum (or the transverse energy) results from a single gluon jet we use the formalism of Dokshitzer, Dyakonov, and Troyan, while if it results from multiple-gluon emission we use the formalism of Parisi and Petronzio. (iii) The relative transverse momentum of jets. While for W/sup + -/ production quarks play an essential role, jet production at moderate p/sub T/ and present energies is dominated by gluon-gluon scattering and therefore we can study the Sudakov form factor of the gluon. We suggest also how through a Hankel transform of experimental data we can have direct access to the Sudakov form factors of quarks and gluons.
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