Observation of B ∧ ∧K

YJ Lee; MZ Wang; K Abe; K Abe; T Abe; H Aihara; Y Asano; V Aulchenko; T Aushev; T Aziz; S Bahinipati; AM Bakich; Y Ban; I Bedny; U Bitenc; I Bizjak; A Bondar; A Bozek; M Bračko; J Brodzicka; TE Browder; P Chang; Y Chao; BG Cheon; R Chistov; SK Choi; Y Choi; A Chuvikov; M Danilov; M Dash; LY Dong; A Drutskoy; S Eidelman; V Eiges; S Fratina; N Gabyshev; A Garmash; T Gershon; G Gokhroo; B Golob; R Guo; J Haba; K Hayasaka; H Hayashii; M Hazumi; T Higuchi; L Hinz; T Hokuue; Y Hoshi; WS Hou; YB Hsiung; A Imoto; K Inami; A Ishikawa; R Itoh; H Iwasaki; M Iwasaki; JH Kang; JS Kang; N Katayama; H Kawai; T Kawasaki; HR Khan; H Kichimi; HJ Kim; JH Kim; SK Kim; P Koppenburg; S Korpar; P Krokovny; A Kuzmin; YJ Kwon; SH Lee; T Lesiak; J Li; SW Lin; J MacNaughton; G Majumder; F Mandl; T Matsumoto; A Matyja; Y Mikami; W Mitaroff; K Miyabayashi; H Miyata; R Mizuk; T Mori; T Nagamine; Y Nagasaka; T Nakadaira; M Nakao; S Nishida; O Nitoh; S Ogawa; T Ohshima; T Okabe; S Okuno; SL Olsen; W Ostrowicz; H Ozaki

Journal article

Observation of B ∧ ∧K

YJ Lee, MZ Wang, K Abe, K Abe, T Abe, H Aihara, Y Asano, V Aulchenko, T Aushev, T Aziz, S Bahinipati, AM Bakich, Y Ban, I Bedny, U Bitenc, I Bizjak, A Bondar, A Bozek, M Bračko, J Brodzicka Show all

Physical Review Letters | AMER PHYSICAL SOC | Published : 2004

DOI: 10.1103/PhysRevLett.93.211801

Abstract

The observation of the hyperonic B + → λλ̄K + decay was presented. It was found that the rate of a charmless B decay was comparable to that of other charmless three-body baryonic modes. It was also found that the invariant mass of the λλ̄ system had a prominent near-threshold peak. The observed results show that the measurement achieved has the first observation of a meson decay to a hyperon pair.