Observation ofB →Λc Λc−K andB0→Λc Λc−K0Decays

N Gabyshev; K Abe; K Abe; I Adachi; H Aihara; Y Asano; V Aulchenko; T Aushev; S Bahinipati; AM Bakich; V Balagura; E Barberio; W Bartel; A Bay; I Bedny; U Bitenc; I Bizjak; A Bondar; A Bozek; M Bračko; TE Browder; A Chen; WT Chen; BG Cheon; R Chistov; Y Choi; A Chuvikov; S Cole; J Dalseno; M Danilov; M Dash; A Drutskoy; S Eidelman; A Garmash; T Gershon; G Gokhroo; B Golob; J Haba; K Hayasaka; H Hayashii; M Hazumi; T Hokuue; Y Hoshi; S Hou; W-S Hou; YB Hsiung; K Ikado; A Imoto; K Inami; R Itoh; M Iwasaki; Y Iwasaki; JH Kang; T Kawasaki; HR Khan; H Kichimi; SM Kim; S Korpar; P Krokovny; R Kulasiri; CC Kuo; A Kuzmin; Y-J Kwon; G Leder; T Lesiak; S-W Lin; D Liventsev; G Majumder; T Matsumoto; W Mitaroff; K Miyabayashi; H Miyata; Y Miyazaki; R Mizuk; E Nakano; M Nakao; Z Natkaniec; S Nishida; S Ogawa; T Ohshima; T Okabe; S Okuno; SL Olsen; H Ozaki; H Palka; CW Park; KS Park; R Pestotnik; LE Piilonen; Y Sakai; N Sato; N Satoyama; T Schietinger; O Schneider; C Schwanda; R Seidl; K Senyo; ME Sevior; M Shapkin; H Shibuya; A Somov; N Soni; R Stamen; S Stanič; M Starič; T Sumiyoshi; K Tamai; N Tamura; M Tanaka; GN Taylor; Y Teramoto; XC Tian; T Tsukamoto; S Uehara; T Uglov; K Ueno; S Uno; P Urquijo; G Varner; KE Varvell; S Villa; CC Wang; CH Wang; Y Watanabe; E Won; QL Xie; A Yamaguchi; M Yamauchi; J Ying; ZP Zhang

Journal article

Observation ofB →Λc Λc−K andB0→Λc Λc−K0Decays

N Gabyshev, K Abe, K Abe, I Adachi, H Aihara, Y Asano, V Aulchenko, T Aushev, S Bahinipati, AM Bakich, V Balagura, E Barberio, W Bartel, A Bay, I Bedny, U Bitenc, I Bizjak, A Bondar, A Bozek, M Bračko Show all

Physical Review Letters | American Physical Society (APS) | Published : 2006

DOI: 10.1103/physrevlett.97.202003

Abstract

We report the first measurements of the doubly charmed baryonic B decays B --> Lambda c+ Lambda c- K. The B+ --> Lambda c+ Lambda c- K+ decay is observed with a branching fraction of (6.5(-0.9)(+1.0)+/-1.1+/-3.4)x10(-4) and a statistical significance of 15.4sigma. The B0 --> Lambda c+ Lambda c- K0 decay is observed with a branching fraction of (7.9(-2.3)(+2.9)+/-1.2+/-4.1)x10(-4) and a statistical significance of 6.6sigma. The branching fraction errors are statistical, systematic, and the error resulting from the uncertainty of the Lambda c+ --> pK- pi+ decay branching fraction. The analysis is based on 357 fb(-1) of data accumulated at the Upsilon(4S) resonance with the Belle detector at th..

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