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Correlated leading baryon-antibaryon production in e+e−→c¯c→Λ+c¯¯¯Λ−cX
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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.
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GARRA TICÓ, Jordi, GRAUGÉS POUS, Eugeni and BABAR Collaboration. Correlated leading baryon-antibaryon production in e+e−→c¯c→Λ+c¯¯¯Λ−cX. Physical Review D. 2010. Vol. 82, num. 9, pags. 091102. ISSN 1550-7998. [consulted: 11 of October of 2026]. Available at: https://hdl.handle.net/2445/131735