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  • PhysRevLett.101.232002

    Rights statement: © 2008 The American Physical Society

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Observation of the doubly strange b baryon Omega(-)(b)

Research output: Contribution to journalJournal article

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  • V. M. Abazov
  • B. Abbott
  • M. Abolins
  • B. S. Acharya
  • M. Adams
  • T. Adams
  • E. Aguilo
  • M. Ahsan
  • G. D. Alexeev
  • G. Alkhazov
  • A. Alton
  • G. Alverson
  • G. A. Alves
  • M. Anastasoaie
  • L. S. Ancu
  • T. Andeen
  • B. Andrieu
  • M. S. Anzelc
  • M. Aoki
  • Y. Arnoud
  • M. Arov
  • M. Arthaud
  • A. Askew
  • B. Asman
  • A. C. S. Assis Jesus
  • O. Atramentov
  • C. Avila
  • F. Badaud
  • L. Bagby
  • B. Baldin
  • D. V. Bandurin
  • P. Banerjee
  • S. Banerjee
  • E. Barberis
  • A. -F. Barfuss
  • P. Bargassa
  • P. Baringer
  • J. Barreto
  • J. F. Bartlett
  • U. Bassler
  • D. Bauer
  • S. B. Beri
  • I. Bertram
  • C. Biscarat
  • G. Borissov
  • H. Fox
  • M. Johnson
  • P. Love
  • P. N. Ratoff
  • A. Sopczak
  • D0 Collaboration
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Article number232002
<mark>Journal publication date</mark>5/12/2008
<mark>Journal</mark>Physical review letters
Issue number23
Volume101
Number of pages7
Publication statusPublished
Original languageEnglish

Abstract

We report the observation of the doubly strange b baryon Omega(-)(b) in the decay channel Omega(-)(b) -> J/psi Omega(-), with J/psi -> mu(+)mu(-) and Omega(-) -> Lambda K- -> (p pi(-))K-, in p (p) over bar collisions at root s = 1.96 TeV. Using approximately 1.3 fb(-1) of data collected with the D0 detector at the Fermilab Tevatron Collider, we observe 17.8 +/- 4.9(stat) +/- 0.8(syst) Omega(-)(b) signal events at a mass of 6.165 +/- 0.010(stat) +/- 0.013(syst) GeV. The significance of the observed signal is 5.4 sigma, corresponding to a probability of 6.7 x 10(-8) of it arising from a background fluctuation.

Bibliographic note

© 2008 The American Physical Society