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Title

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

AuthorsBabar Collaboration; Azzolini, Virginia; López-March, Neus CSIC; Martínez-Vidal, Fernando CSIC ORCID; Milanés, Diego A. CSIC; Oyanguren, Arantza CSIC ORCID; Aubert, B.; Lees, J. P.; Sánchez, P. D.
Issue Date9-Nov-2010
PublisherAmerican Physical Society
CitationPhysical Review - Section D - Particles and Fields 82 (9): 091102 (2010)
AbstractWe 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.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.82.091102
URIhttp://hdl.handle.net/10261/32871
DOI10.1103/PhysRevD.82.091102
ISSN1550-7998
Appears in Collections:(IFIC) Artículos

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