Sigma(-)-antihyperon correlations in Z(0) decay and investigation of the baryon production mechanism

0349742 - FZÚ 2011 RIV DE eng J - Článek v odborném periodiku
Abbiendi, G. - Ainsley, C. - Akesson, P.F. - Taševský, Marek
Sigma(-)-antihyperon correlations in Z(0) decay and investigation of the baryon production mechanism.
European Physical Journal C. Roč. 64, č. 4 (2009), s. 609-625. ISSN 1434-6044. E-ISSN 1434-6052
Grant CEP: GA MŠMT LC527
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: LEP * correlations * antihyperon * baryon quantum numbers
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 2.746, rok: 2009
http://www.springerlink.com/content/g73t12682604j1l4/

Data collected around centre-of-mass energies of 91 GeV by the OPAL experiment at the LEP e+e− collider are used to study the mechanism of baryon formation. As the signature, the fraction of Σ− hyperons whose baryon number is compensated by the production of a Σ−(bar), $/Lambda^-$ or $/Xi^-$ antihyperon is determined. The method relies entirely on quantum number correlations of the baryons, and not rapidity correlations, making it more model independent than previous studies.
Trvalý link: http://hdl.handle.net/11104/0189899