Skip to Main content Skip to Navigation
Journal articles

Deep sub-threshold $\Xi^-$ production in Ar+KCl reactions at 1.76A GeV

G. Agakishiev A. Balanda R. Bassini D. Belver A. V. Belyaev A. Blanco M. Böhmer J. L. Boyard 1 P. Braun-Munzinger P. Cabanelas E. Castro S. Chernenko T. Christ M. Destefanis J. Diaz F. Dohrmann A. Dybczak T. Eberl L. Fabbietti O. V. Fateev P. Finocchiaro P. Fonte J. Friese I. Fröhlich T. Galatyuk J. A. Garzón R. Gernhäuser A. Gil C. Gilardi M. Golubeva D. González-Díaz F. Guber T. Hennino 1 R. Holzmann I. Iori A. Ivashkin M. Jurkovic B. Kämpfer K. Kanaki T. Karavicheva D. Kirschner I. Koenig W. Koenig B. W. Kolb R. Kotte F. Krizek R. Krücken W. Kühn A. Kugler A. Kurepin S. Lang J. S. Lange K. Lapidus T. Liu L. Lopes M. Lorenz L. Maier A. Mangiarotti J. Markert V. Metag B. Michalska J. Michel D. Mishra E. Morinière 1 J. Mousa C. Müntz L. Naumann J. Otwinowski Y. C. Pachmayer M. Palka Y. Parpottas V. Pechenov O. Pechenova J. Pietraszko W. Przygoda B. Ramstein A. Reshetin M. Roy-Stephan A. Rustamov A. Sadovsky B. Sailer P. Salabura A. Schmah Yu. G. Sobolev S. Spataro B. Spruck H. Ströbele J. Stroth C. Sturm M. Sudol A. Tarantola K. Teilab P. Tlusty M. Traxler R. Trebacz H. Tsertos V. Wagner M. Weber M. Wisniowski T. Wojcik J. Wüstenfeld S. Yurevich Y. V. Zanevsky P. Zhou P. Zumbruch
1 IPNO - Institut de Physique Nucléaire d'Orsay
Abstract : We report first results on a deep subthreshold production of the doubly strange hyperon Xi- in a heavy-ion reaction. At a beam energy of 1.76A GeV the reaction Ar+KCl was studied with the High Acceptance Di-Electron Spectrometer at SIS18/GSI. A high-statistics and high-purity Lambda sample was collected, allowing for the investigation of the decay channel Xi--->Lambdapi-. The deduced Xi-/(Lambda+Sigma0) production ratio of (5.6±1.2-1.7+1.8)×10-3 is significantly larger than available model predictions.
Document type :
Journal articles
Complete list of metadatas
http://hal.in2p3.fr/in2p3-00429587
Contributor : Sophie Heurteau <>
Submitted on : Tuesday, November 3, 2009 - 3:56:35 PM
Last modification on : Wednesday, September 16, 2020 - 4:07:55 PM

Links full text

arxiv

Identifiers

Collections

IN2P3 | IPNO | CNRS

Citation

G. Agakishiev, A. Balanda, R. Bassini, D. Belver, A. V. Belyaev, et al.. Deep sub-threshold $\Xi^-$ production in Ar+KCl reactions at 1.76A GeV. Physical Review Letters, American Physical Society, 2009, 103, pp.132301[5]. ⟨10.1103/PhysRevLett.103.132301⟩. ⟨in2p3-00429587⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

133