title: Direct observation of a rho decay of the D13(1520) baryon resonance.
abstract: The reaction gammap-->pi(+)pi(0)n has been measured at MAMI for photon energies up to 820 MeV. Invariant mass spectra of the particles in the final state (pi(+)n), (pi(0)n), (pi(+)pi(0)) have been determined for several bins of incident photon energy. Differences in pi(+)pi(0) and simultaneously measured pi(0)pi(0) invariant mass distributions are assigned to a rho branch of the D13(1520) nucleon resonance.
authors.affiliation: II. Physikalisches Institut, Universität Giessen, D-35392 Giessen, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Langgärtner
authors.forename: J
authors.initials: J
authors.lastname: Ahrens
authors.forename: R
authors.initials: R
authors.lastname: Beck
authors.forename: V
authors.initials: V
authors.lastname: Hejny
authors.forename: M
authors.initials: M
authors.lastname: Kotulla
authors.forename: B
authors.initials: B
authors.lastname: Krusche
authors.forename: V
authors.initials: V
authors.lastname: Kuhr
authors.forename: R
authors.initials: R
authors.lastname: Leukel
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authors.initials: JD
authors.lastname: McGregor
authors.forename: J G
authors.initials: JG
authors.lastname: Messchendorp
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authors.initials: V
authors.lastname: Metag
authors.forename: R
authors.initials: R
authors.lastname: Novotny
authors.forename: V
authors.initials: V
authors.lastname: Olmos de Léon
authors.forename: R O
authors.initials: RO
authors.lastname: Owens
authors.forename: F
authors.initials: F
authors.lastname: Rambo
authors.forename: S
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authors.lastname: Schadmand
authors.forename: A
authors.initials: A
authors.lastname: Schmidt
authors.forename: U
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authors.lastname: Siodlaczek
authors.forename: H
authors.initials: H
authors.lastname: Ströher
authors.forename: J
authors.initials: J
authors.lastname: Weiss
authors.forename: F
authors.initials: F
authors.lastname: Wissmann
authors.forename: M
authors.initials: M
authors.lastname: Wolf