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Correlated leading baryon-antibaryon production in e(+)e(-) -> c(c)over-bar -> Lambda(+)(c)(Lambda)over-bar(c)(-)X

AutorBabar Collaboration; Azzolini, Virginia; López-March, Neus ; Martínez-Vidal, Fernando ; Milanés, Diego A. ; Oyanguren, Arantza ; Aubert, B.; Lees, J. P.; Sánchez, P. D.
Fecha de publicación9-nov-2010
EditorAmerican Physical Society
CitaciónPhysical Review - Section D - Particles and Fields 82 (9): 091102 (2010)
ResumenWe present a study of 649 +/- 35 e(+)e(-) -> c (c) over bar events produced at root s approximate to 10.6 GeV containing both Lambda(+)(c) baryon and a (Lambda) over bar (-)(c) antibaryon. The number observed is roughly 4 times that expected if the leading charmed hadron types are uncorrelated, confirming an observation by the CLEO Collaboration. We find a 2-jet topology in these events but very few additional baryons, demonstrating that the primary c and (c) over bar are predominantly contained in a correlated baryon-antibaryon system. In addition to the charmed baryons we observe on average 2.6 +/- 0.2 charged intermediate mesons, predominantly pions, carrying 65% of the remaining energy.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevD.82.091102
URIhttp://hdl.handle.net/10261/32871
DOI10.1103/PhysRevD.82.091102
ISSN1550-7998
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