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Title: Correlated leading baryon-antibaryon production in e+e−→c¯c→Λ+c¯¯¯Λ−cX
Author: Garra Ticó, Jordi
Graugés Pous, Eugeni
BABAR Collaboration
Keywords: Física de partícules
Particle physics
Issue Date: 9-Nov-2010
Publisher: American Physical Society
Abstract: We present a study of 649 ± 35 e + e − → c ¯ c events produced at √ s ≈ 10.6     GeV containing both a Λ + c baryon and a ¯¯¯ Λ − 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 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.
Note: Reproducció del document publicat a:
It is part of: Physical Review D, 2010, vol. 82, num. 9, p. 091102
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ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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