title: Diffractively produced charm final states in 800-GeV/c pp collisions.
abstract: We report the first observation of diffractively produced open charm in 800-GeV/c pp collisions of the type pp-->pD*X. We measure cross sections of sigma(diff)(D*+) = (0.185+/-0.044+/-0.054) (mu)b and sigma(diff)(D(*-)) = (0.174+/-0.034+/-0.029) (mu)b. Our measurements are based on 4.3x10(9) events recorded by FNAL E690 in the fixed-target run of 1991. We compare our results with previous fixed-target charm experiments.
authors.affiliation: University of Massachusetts, Amherst, 01003, USA.
authors.forename: M H
authors.initials: MH
authors.lastname: Wang
authors.forename: M C
authors.initials: MC
authors.lastname: Berisso
authors.forename: D C
authors.initials: DC
authors.lastname: Christian
authors.forename: J
authors.initials: J
authors.lastname: Félix
authors.forename: A
authors.initials: A
authors.lastname: Gara
authors.forename: E
authors.initials: E
authors.lastname: Gottschalk
authors.forename: G
authors.initials: G
authors.lastname: Gutiérrez
authors.forename: E P
authors.initials: EP
authors.lastname: Hartouni
authors.forename: B C
authors.initials: BC
authors.lastname: Knapp
authors.forename: M N
authors.initials: MN
authors.lastname: Kreisler
authors.forename: S
authors.initials: S
authors.lastname: Lee
authors.forename: K
authors.initials: K
authors.lastname: Markianos
authors.forename: G
authors.initials: G
authors.lastname: Moreno
authors.forename: M A
authors.initials: MA
authors.lastname: Reyes
authors.forename: M
authors.initials: M
authors.lastname: Sosa
authors.forename: A
authors.initials: A
authors.lastname: Wehmann
authors.forename: D
authors.initials: D
authors.lastname: Wesson