- Abstract:
- With a sample of 232×106 Υ(4S)→BB̄ events collected with the BABAR detector, we study the decay B+→pp̄K+ excluding charmonium decays to pp̄. We measure a branching fraction B(B+→pp̄K+)=(6.7±0.5±0.4)×10-6. An enhancement at low pp̄ mass is observed and the Dalitz plot asymmetry suggests dominance of the penguin amplitude in this B decay. We search for a pentaquark candidate Θ*++ decaying into pK+ in the mass range 1.43 to 2.00GeV/c2 and set limits on B(B+→Θ*++p̄)×B(Θ*++→pK+) at the 10-7 level. © 2005 The American Physical Society.
- Publication status:
- Published
- Publisher copy:
- 10.1103/PhysRevD.72.051101
-
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- Journal:
- PHYSICAL REVIEW D
- Volume:
- 72
- Issue:
- 5
- Publication date:
- 2005-09-05
- DOI:
- EISSN:
-
1550-2368
- ISSN:
-
1550-7998
- URN:
-
uuid:6be9823a-72d2-4bd1-b7a2-a3f33465a441
- Source identifiers:
-
23357
- Local pid:
- pubs:23357
- Language:
- English
- Copyright date:
- 2005
Journal article
Measurement of the B+-> p(p)over-barK(+) branching fraction and study of the decay dynamics
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