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

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BABAR Collaboration (Including:

Aubert, B., Karyotakis, Y., Lees, J. P., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J. Garra, Grauges, E., Martinelli, M. et al.
). (2010) Correlated leading baryon-antibaryon production in e(+)e(-) -> c(c)over-bar -> Lambda(+)(c)(Lambda)over-bar(c)(-)X. Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.82 (No.9). article no. 091102(R) . doi:10.1103/PhysRevD.82.091102

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Official URL: http://dx.doi.org/10.1103/PhysRevD.82.091102

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Abstract

We 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.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Official Date: 9 November 2010
Dates:
DateEvent
9 November 2010Published
Volume: Vol.82
Number: No.9
Number of Pages: 8
Page Range: article no. 091102(R)
DOI: 10.1103/PhysRevD.82.091102
Status: Peer Reviewed
Publication Status: Published
Funder: DOE (USA), NSF (USA), NSERC (Canada), CEA (France), CNRS-IN2P3 (France), BMBF (Germany), DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), STFC (United Kingdom), Marie Curie EIF (European Union), A. P. Sloan Foundation

Data sourced from Thomson Reuters' Web of Knowledge

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