Year: 1998
Type: erratum
Abstract: Jets observed in hadron-hadron scattering contain a contribution from the ``underlying event'' that is produced by spectator interactions taking place incoherently with the major parton-parton collision, due to the extended composite structure of the colliding hadrons. Using a recent measurement of the double parton interaction rate, we calculate that the underlying event may be $2$--$3$ times stronger than generally assumed, as a result of semi-hard perturbative multiple-parton interactions. This can have an important influence on the inclusive jet cross section at moderate values of ${E}_{T},$ persisting at the $5--10%$ level to the largest observable ${E}_{T}.$ We show how the underlying event can be measured accurately using a generalization of a method first proposed by Marchesini and Webber.
Author: Jon Pumplin
Institution: Michigan State University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1992626421