Observation of the baryonic B decay B{sup 0}{yields}{Lambda}{sub c}{sup +}{Lambda}K{sup -}

Journal Article · Sat Oct 01 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.84.071102· OSTI ID:21607728

Lees, J P; Poireau, V; Tisserand, V ^[1]; Garra Tico, J; Grauges, E ^[2]; Martinelli, M; Palano, A; Pappagallo, M ^[3]; Milanes, D A ^[3]; Eigen, G; Stugu, B; Sun, L ^[4]; Brown, D N; Kerth, L T; Kolomensky, Yu G; Lynch, G ^[5]; Koch, H; Schroeder, T ^[6]; Asgeirsson, D J; Hearty, C ^[7]

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1. Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Universite de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux (France)
2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona (Spain)
3. INFN Sezione di Bari, I-70126 Bari (Italy)
4. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
5. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)
6. Ruhr Universitaet Bochum, Institut fuer Experimentalphysik 1, D-44780 Bochum (Germany)
7. University of British Columbia, Vancouver, British Columbia, V6T 1Z1 (Canada)

We report the observation of the baryonic B decay B{sup 0}{yields}{Lambda}{sub c}{sup +}{Lambda}K{sup -} with a significance larger than 7 standard deviations based on 471x10{sup 6} BB pairs collected with the BABAR detector at the PEP-II storage ring at SLAC. We measure the branching fraction for the decay B{sup 0}{yields}{Lambda}{sub c}{sup +}{Lambda}K{sup -} to be (3.8{+-}0.8{sub stat}{+-}0.2{sub sys}{+-}1.0{sub {Lambda}}{sub c}{sup +})x10{sup -5}. The uncertainties are statistical, systematic, and due to the uncertainty in the {Lambda}{sub c}{sup +} branching fraction. We find that the {Lambda}{sub c}{sup +}K{sup -} invariant-mass distribution shows an enhancement above 3.5 GeV/c{sup 2}.

• OSTI ID: 21607728
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 84; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
B NEUTRAL MESONS
BARYONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
BRANCHING RATIO
DECAY
DIMENSIONLESS NUMBERS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
HADRONS
HYPERONS
KAONS
KAONS MINUS
LAMBDA BARYONS
MASS DISTRIBUTION
MESONS
NATIONAL ORGANIZATIONS
PARTICLE DECAY
PEP STORAGE RINGS
PSEUDOSCALAR MESONS
SPATIAL DISTRIBUTION
STANFORD LINEAR ACCELERATOR CENTER
STORAGE RINGS
STRANGE MESONS
STRANGE PARTICLES
US DOE
US ERDA
US ORGANIZATIONS