title: Limits for the central production of Theta+ and Xi(--)pentaquarks in 920-GeV pA collisions.
abstract: We have searched for Theta+(1540) and Xi(--)(1862) pentaquark candidates in proton-induced reactions on C, Ti, and W targets at midrapidity and square root of s = 41.6 GeV. In 2 x 10(8) inelastic events we find no evidence for narrow (sigma approximately 5 MeV) signals in the Theta+ --> pK0(S) and Xi(--) --> Xi- pi- channels; our 95% C.L. upper limits (UL) for the inclusive production cross section times branching fraction B dsigma/dy/(y approximately 0) are (4-16) mub/N for a Theta+ mass between 1521 and 1555 MeV, and 2.5 mub/N for the Xi(--). The UL of the yield ratio of Theta+/Lambda(1520) < (3-12)% is significantly lower than model predictions. Our UL of B Xi(--)/Xi(1530)0 < 4% is at variance with the results that have provided the first evidence for the Xi(--).
authors.affiliation: Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, D-80805 Munich, Germany.
authors.forename: I
authors.initials: I
authors.lastname: Abt
authors.forename: M
authors.initials: M
authors.lastname: Adams
authors.forename: M
authors.initials: M
authors.lastname: Agari
authors.forename: H
authors.initials: H
authors.lastname: Albrecht
authors.forename: A
authors.initials: A
authors.lastname: Aleksandrov
authors.forename: V
authors.initials: V
authors.lastname: Amaral
authors.forename: A
authors.initials: A
authors.lastname: Amorim
authors.forename: S J
authors.initials: SJ
authors.lastname: Aplin
authors.forename: V
authors.initials: V
authors.lastname: Aushev
authors.forename: Y
authors.initials: Y
authors.lastname: Bagaturia
authors.forename: V
authors.initials: V
authors.lastname: Balagura
authors.forename: M
authors.initials: M
authors.lastname: Bargiotti
authors.forename: O
authors.initials: O
authors.lastname: Barsukova
authors.forename: J
authors.initials: J
authors.lastname: Bastos
authors.forename: J
authors.initials: J
authors.lastname: Batista
authors.forename: C
authors.initials: C
authors.lastname: Bauer
authors.forename: Th S
authors.initials: TS
authors.lastname: Bauer
authors.forename: A
authors.initials: A
authors.lastname: Belkov
authors.forename: Ar
authors.initials: A
authors.lastname: Belkov
authors.forename: I
authors.initials: I
authors.lastname: Belotelov
authors.forename: A
authors.initials: A
authors.lastname: Bertin
authors.forename: B
authors.initials: B
authors.lastname: Bobchenko
authors.forename: M
authors.initials: M
authors.lastname: Böcker
authors.forename: A
authors.initials: A
authors.lastname: Bogatyrev
authors.forename: G
authors.initials: G
authors.lastname: Bohm
authors.forename: M
authors.initials: M
authors.lastname: Bräuer
authors.forename: M
authors.initials: M
authors.lastname: Bruinsma
authors.forename: M
authors.initials: M
authors.lastname: Bruschi
authors.forename: P
authors.initials: P
authors.lastname: Buchholz
authors.forename: T
authors.initials: T
authors.lastname: Buran
authors.forename: J
authors.initials: J
authors.lastname: Carvalho
authors.forename: P
authors.initials: P
authors.lastname: Conde
authors.forename: C
authors.initials: C
authors.lastname: Cruse
authors.forename: M
authors.initials: M
authors.lastname: Dam
authors.forename: K M
authors.initials: KM
authors.lastname: Danielsen
authors.forename: M
authors.initials: M
authors.lastname: Danilov
authors.forename: S De
authors.initials: SD
authors.lastname: Castro
authors.forename: H
authors.initials: H
authors.lastname: Deppe
authors.forename: X
authors.initials: X
authors.lastname: Dong
authors.forename: H B
authors.initials: HB
authors.lastname: Dreis
authors.forename: V
authors.initials: V
authors.lastname: Egorytchev
authors.forename: K
authors.initials: K
authors.lastname: Ehret
authors.forename: F
authors.initials: F
authors.lastname: Eisele
authors.forename: D
authors.initials: D
authors.lastname: Emeliyanov
authors.forename: S
authors.initials: S
authors.lastname: Essenov
authors.forename: L
authors.initials: L
authors.lastname: Fabbri
authors.forename: P
authors.initials: P
authors.lastname: Faccioli
authors.forename: M
authors.initials: M
authors.lastname: Feuerstack-Raible
authors.forename: J
authors.initials: J
authors.lastname: Flammer
authors.forename: B
authors.initials: B
authors.lastname: Fominykh
authors.forename: M
authors.initials: M
authors.lastname: Funcke
authors.forename: Ll
authors.initials: L
authors.lastname: Garrido
authors.forename: B
authors.initials: B
authors.lastname: Giacobbe
authors.forename: J
authors.initials: J
authors.lastname: Gläss
authors.forename: D
authors.initials: D
authors.lastname: Goloubkov
authors.forename: Y
authors.initials: Y
authors.lastname: Golubkov
authors.forename: A
authors.initials: A
authors.lastname: Golutvin
authors.forename: I
authors.initials: I
authors.lastname: Golutvin
authors.forename: I
authors.initials: I
authors.lastname: Gorbounov
authors.forename: A
authors.initials: A
authors.lastname: Gorisek
authors.forename: O
authors.initials: O
authors.lastname: Gouchtchine
authors.forename: D C
authors.initials: DC
authors.lastname: Goulart
authors.forename: S
authors.initials: S
authors.lastname: Gradl
authors.forename: W
authors.initials: W
authors.lastname: Gradl
authors.forename: F
authors.initials: F
authors.lastname: Grimaldi
authors.forename: J
authors.initials: J
authors.lastname: Groth-Jensen
authors.forename: Yu
authors.initials: Y
authors.lastname: Guilitsky
authors.forename: J D
authors.initials: JD
authors.lastname: Hansen
authors.forename: J M
authors.initials: JM
authors.lastname: Hernández
authors.forename: W
authors.initials: W
authors.lastname: Hofmann
authors.forename: T
authors.initials: T
authors.lastname: Hott
authors.forename: W
authors.initials: W
authors.lastname: Hulsbergen
authors.forename: U
authors.initials: U
authors.lastname: Husemann
authors.forename: O
authors.initials: O
authors.lastname: Igonkina
authors.forename: M
authors.initials: M
authors.lastname: Ispiryan
authors.forename: T
authors.initials: T
authors.lastname: Jagla
authors.forename: C
authors.initials: C
authors.lastname: Jiang
authors.forename: H
authors.initials: H
authors.lastname: Kapitza
authors.forename: S
authors.initials: S
authors.lastname: Karabekyan
authors.forename: N
authors.initials: N
authors.lastname: Karpenko
authors.forename: S
authors.initials: S
authors.lastname: Keller
authors.forename: J
authors.initials: J
authors.lastname: Kessler
authors.forename: F
authors.initials: F
authors.lastname: Khasanov
authors.forename: Yu
authors.initials: Y
authors.lastname: Kiryushin
authors.forename: E
authors.initials: E
authors.lastname: Klinkby
authors.forename: K T
authors.initials: KT
authors.lastname: Knöpfle
authors.forename: H
authors.initials: H
authors.lastname: Kolanoski
authors.forename: S
authors.initials: S
authors.lastname: Korpar
authors.forename: C
authors.initials: C
authors.lastname: Krauss
authors.forename: P
authors.initials: P
authors.lastname: Kreuzer
authors.forename: P
authors.initials: P
authors.lastname: Krizan
authors.forename: D
authors.initials: D
authors.lastname: Krücker
authors.forename: S
authors.initials: S
authors.lastname: Kupper
authors.forename: T
authors.initials: T
authors.lastname: Kvaratskheliia
authors.forename: A
authors.initials: A
authors.lastname: Lanyov
authors.forename: K
authors.initials: K
authors.lastname: Lau
authors.forename: B
authors.initials: B
authors.lastname: Lewendel
authors.forename: T
authors.initials: T
authors.lastname: Lohse
authors.forename: B
authors.initials: B
authors.lastname: Lomonosov
authors.forename: R
authors.initials: R
authors.lastname: Männer
authors.forename: S
authors.initials: S
authors.lastname: Masciocchi
authors.forename: I
authors.initials: I
authors.lastname: Massa
authors.forename: I
authors.initials: I
authors.lastname: Matchikhilian
authors.forename: G
authors.initials: G
authors.lastname: Medin
authors.forename: M
authors.initials: M
authors.lastname: Medinnis
authors.forename: M
authors.initials: M
authors.lastname: Mevius
authors.forename: A
authors.initials: A
authors.lastname: Michetti
authors.forename: Yu
authors.initials: Y
authors.lastname: Mikhailov
authors.forename: R
authors.initials: R
authors.lastname: Mizuk
authors.forename: R
authors.initials: R
authors.lastname: Muresan
authors.forename: M
authors.initials: M
authors.lastname: Zur Nedden
authors.forename: M
authors.initials: M
authors.lastname: Negodaev
authors.forename: M
authors.initials: M
authors.lastname: Nörenberg
authors.forename: S
authors.initials: S
authors.lastname: Nowak
authors.forename: M T
authors.initials: MT
authors.lastname: Núñez Pardo de Vera
authors.forename: M
authors.initials: M
authors.lastname: Ouchrif
authors.forename: F
authors.initials: F
authors.lastname: Ould-Saada
authors.forename: C
authors.initials: C
authors.lastname: Padilla
authors.forename: D
authors.initials: D
authors.lastname: Peralta
authors.forename: R
authors.initials: R
authors.lastname: Pernack
authors.forename: R
authors.initials: R
authors.lastname: Pestotnik
authors.forename: M
authors.initials: M
authors.lastname: Piccinini
authors.forename: M A
authors.initials: MA
authors.lastname: Pleier
authors.forename: M
authors.initials: M
authors.lastname: Poli
authors.forename: V
authors.initials: V
authors.lastname: Popov
authors.forename: A
authors.initials: A
authors.lastname: Pose
authors.forename: D
authors.initials: D
authors.lastname: Pose
authors.forename: S
authors.initials: S
authors.lastname: Prystupa
authors.forename: V
authors.initials: V
authors.lastname: Pugatch
authors.forename: Y
authors.initials: Y
authors.lastname: Pylypchenko
authors.forename: J
authors.initials: J
authors.lastname: Pyrlik
authors.forename: K
authors.initials: K
authors.lastname: Reeves
authors.forename: D
authors.initials: D
authors.lastname: Ressing
authors.forename: H
authors.initials: H
authors.lastname: Rick
authors.forename: I
authors.initials: I
authors.lastname: Riu
authors.forename: P
authors.initials: P
authors.lastname: Robmann
authors.forename: I
authors.initials: I
authors.lastname: Rostovtseva
authors.forename: V
authors.initials: V
authors.lastname: Rybnikov
authors.forename: F
authors.initials: F
authors.lastname: Sánchez
authors.forename: A
authors.initials: A
authors.lastname: Sbrizzi
authors.forename: M
authors.initials: M
authors.lastname: Schmelling
authors.forename: B
authors.initials: B
authors.lastname: Schmidt
authors.forename: A
authors.initials: A
authors.lastname: Schreiner
authors.forename: H
authors.initials: H
authors.lastname: Schröder
authors.forename: A J
authors.initials: AJ
authors.lastname: Schwartz
authors.forename: A S
authors.initials: AS
authors.lastname: Schwarz
authors.forename: B
authors.initials: B
authors.lastname: Schwenninger
authors.forename: B
authors.initials: B
authors.lastname: Schwingenheuer
authors.forename: F
authors.initials: F
authors.lastname: Sciacca
authors.forename: N
authors.initials: N
authors.lastname: Semprini-Cesari
authors.forename: S
authors.initials: S
authors.lastname: Shuvalov
authors.forename: L
authors.initials: L
authors.lastname: Silva
authors.forename: K
authors.initials: K
authors.lastname: Smirnov
authors.forename: L
authors.initials: L
authors.lastname: Sözüer
authors.forename: S
authors.initials: S
authors.lastname: Solunin
authors.forename: A
authors.initials: A
authors.lastname: Somov
authors.forename: S
authors.initials: S
authors.lastname: Somov
authors.forename: J
authors.initials: J
authors.lastname: Spengler
authors.forename: R
authors.initials: R
authors.lastname: Spighi
authors.forename: A
authors.initials: A
authors.lastname: Spiridonov
authors.forename: A
authors.initials: A
authors.lastname: Stanovnik
authors.forename: M
authors.initials: M
authors.lastname: Staric
authors.forename: C
authors.initials: C
authors.lastname: Stegmann
authors.forename: H S
authors.initials: HS
authors.lastname: Subramania
authors.forename: M
authors.initials: M
authors.lastname: Symalla
authors.forename: I
authors.initials: I
authors.lastname: Tikhomirov
authors.forename: M
authors.initials: M
authors.lastname: Titov
authors.forename: I
authors.initials: I
authors.lastname: Tsakov
authors.forename: U
authors.initials: U
authors.lastname: Uwer
authors.forename: C
authors.initials: C
authors.lastname: van Eldik
authors.forename: Yu
authors.initials: Y
authors.lastname: Vassiliev
authors.forename: M
authors.initials: M
authors.lastname: Villa
authors.forename: A
authors.initials: A
authors.lastname: Vitale
authors.forename: I
authors.initials: I
authors.lastname: Vukotic
authors.forename: H
authors.initials: H
authors.lastname: Wahlberg
authors.forename: A H
authors.initials: AH
authors.lastname: Walenta
authors.forename: M
authors.initials: M
authors.lastname: Walter
authors.forename: J J
authors.initials: JJ
authors.lastname: Wang
authors.forename: D
authors.initials: D
authors.lastname: Wegener
authors.forename: U
authors.initials: U
authors.lastname: Werthenbach
authors.forename: H
authors.initials: H
authors.lastname: Wolters
authors.forename: R
authors.initials: R
authors.lastname: Wurth
authors.forename: A
authors.initials: A
authors.lastname: Wurz
authors.forename: Yu
authors.initials: Y
authors.lastname: Zaitsev
authors.forename: M
authors.initials: M
authors.lastname: Zavertyaev
authors.forename: G
authors.initials: G
authors.lastname: Zech
authors.forename: T
authors.initials: T
authors.lastname: Zeuner
authors.forename: A
authors.initials: A
authors.lastname: Zhelezov
authors.forename: Z
authors.initials: Z
authors.lastname: Zheng
authors.forename: R
authors.initials: R
authors.lastname: Zimmermann
authors.forename: T
authors.initials: T
authors.lastname: Zivko
authors.forename: A
authors.initials: A
authors.lastname: Zoccoli