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Leif Jönsson

Leif Jönsson

Professor emeritus

Leif Jönsson

Search for baryonic resonances decaying to Xi pi in deep-inelastic scattering at HERA

Author

  • A. Aktas
  • Magnus Hansson
  • Leif Jönsson
  • Albert Knutsson
  • Sakar Osman

Summary, in English

A search for narrow baryonic resonances decaying into Ξ-π- or Ξ-π+ and their antiparticles is carried out with the H1 detector using deep inelastic scattering events at HERA in the range of negative photon four-momentum transfer squared 2 < Q2 < 100 GeV2. No signal is observed for a new baryonic state in the mass range 1600–2300 MeV in either the doubly charged or the neutral decay channels. The known Ξ(1530)0 is observed through its decay mode into Ξ-π+. Upper limits are given on the ratio of the production rates of new baryonic states, such as the hypothetical pentaquark states Ξ– 5q or Ξ0 5q, relative to the Ξ(1530)0 baryon state.

Department/s

  • Particle and nuclear physics

Publishing year

2007

Language

English

Pages

507-514

Publication/Series

European Physical Journal C

Volume

52

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1434-6044