title: Improved experimental limits on the production of magnetic monopoles.
abstract: We present new limits on low mass accelerator-produced pointlike Dirac magnetic monopoles trapped and bound in matter surrounding the D0 collision region of the Tevatron at Fermilab (experiment E-882). In the context of a Drell-Yan mechanism, we obtain cross section limits for the production of monopoles with magnetic charge values of 1, 2, 3, and 6 times the minimum Dirac charge of the order of picobarns, some 100 times smaller than found in similar previous Fermilab searches. Mass limits inferred from these cross section limits are presented.
authors.affiliation: Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019, USA. grk@mail.nhn.ou.edu
authors.forename: G R
authors.initials: GR
authors.lastname: Kalbfleisch
authors.forename: K A
authors.initials: KA
authors.lastname: Milton
authors.forename: M G
authors.initials: MG
authors.lastname: Strauss
authors.forename: L
authors.initials: L
authors.lastname: Gamberg
authors.forename: E H
authors.initials: EH
authors.lastname: Smith
authors.forename: W
authors.initials: W
authors.lastname: Luo