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

Aktas A., Alexa C., Andreev V., Anthonis T., Antunovic B., Aplin S., ...More

European Physical Journal C, vol.52, no.3, pp.507-514, 2007 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 3
  • Publication Date: 2007
  • Doi Number: 10.1140/epjc/s10052-007-0407-3
  • Journal Name: European Physical Journal C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.507-514
  • Yıldız Technical University Affiliated: Yes


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. © 2007 Springer-Verlag / Società Italiana di Fisica.