Measurement of the B{sup +}{yields}ppK{sup +} branching fraction and study of the decay dynamics
Journal Article
·
· Physical Review. D, Particles Fields
- Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
- IFAE, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona (Spain)
- Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
- Institute of High Energy Physics, Beijing 100039 (China)
- University of Bergen, Inst. of Physics, N-5007 Bergen (Norway); and others
With a sample of 232x10{sup 6} {upsilon}(4S){yields}BB events collected with the BABAR detector, we study the decay B{sup +}{yields}ppK{sup +} excluding charmonium decays to pp. We measure a branching fraction B(B{sup +}{yields}ppK{sup +})=(6.7{+-}0.5{+-}0.4)x10{sup -6}. An enhancement at low pp mass is observed and the Dalitz plot asymmetry suggests dominance of the penguin amplitude in this B decay. We search for a pentaquark candidate {theta}*{sup ++} decaying into pK{sup +} in the mass range 1.43 to 2.00 GeV/c{sup 2} and set limits on B(B{sup +}{yields}{theta}*{sup ++}p)xB({theta}*{sup ++}{yields}pK{sup +}) at the 10{sup -7} level.
- OSTI ID:
- 20711393
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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