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Observation of a new charmed baryon

  • H. Albrecht
  • , H. Ehrlichmann
  • , T. Hamacher
  • , R. P. Hofmann
  • , T. Kirchhoff
  • , A. Nau
  • , S. Nowak
  • , H. Schröder
  • , H. D. Schulz
  • , M. Walter
  • , R. Wurth
  • , C. Hast
  • , H. Kapitza
  • , H. Kolanoski
  • , A. Kosche
  • , A. Lange
  • , A. Lindner
  • , R. Mankel
  • , M. Schieber
  • , T. Siegmund
  • B. Spaan, H. Thurn, D. Töpfer, D. Wegener, M. Bittner, P. Eckstein, M. Paulini, K. Reim, H. Wegener, R. Eckmann, R. Mundt, T. Oest, R. Reiner, W. Schmidt-Parzefall, J. Stiewe, S. Werner, K. Ehret, W. Hofmann, A. Hüpper, S. Khan, K. T. Knöpfle, M. Seeger, J. Spengler, D. I. Britton, C. E.K. Charlesworth, K. W. Edwards, E. R.F. Hyatt, P. Krieger, D. B. MacFarlane, P. M. Patel, J. D. Prentice, P. R.B. Saull, K. Tzamariudaki, R. G. Van de Water, T. S. Yoon, D. Reßing, M. Schmidtler, M. Schneider, K. R. Schubert, K. Strahl, R. Waldi, S. Weseler, G. Kernel, P. Križan, E. Križnič, T. Podobnik, T. Živko, V. Balagura, I. Belyaev, S. Chechelnitsky, M. Danilov, A. Droutskoy, Yu Gershtein, A. Golutvin, I. Korolko, G. Kostina, D. Litvintsev, V. Lubimov, P. Pakhlov, S. Semenov, A. Snizhko, I. Tichomirov, Yu Zaitsev
  • c/o DESY
  • University of Dortmund
  • Technical University Dresden
  • Friedrich-Alexander University (FAU) Erlangen-Nürnberg and Universitätsklinikum Erlangen
  • Universität Hamburg
  • University of Heidelberg
  • Max-Planck-Institut für Kernphysik
  • Institute of Particle Physics
  • Universität Karlsruhe/Forschungszentrum Karlsruhe
  • University of Ljubljana
  • Institute for Theoretical and Experimental Physics

Research output: Contribution to journalArticlepeer-review

Abstract

Using the ARGUS detector at the e+e- storage ring DORIS II at DESY, we have observed a new charmed baryon state in the channel Λc+π+π-. (All references to a specific charged state also imply the charge conjugate state.) The mass of this state was measured to be (2626.6 ± 0.5 ± 1.5) MeV/c2. The product of the production cross section and branching ratio for this channel was determined to be (11.5 ± 2.5 ± 3.0) pb, and the natural width estimated to be smaller than 3.2 MeV/c2 at 90% CL.

Original languageEnglish
Pages (from-to)227-232
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume317
Issue number1-2
DOIs
Publication statusPublished - 4 Nov 1993
Externally publishedYes

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