Measurement of the B+-> p(p)over-barK(+) branching fraction and study of the decay dynamics

B. Aubert; J.Y. Chen; K. Peters; L.L. Zhang; S. Chen; M.C. Simani; X.H. Li; M.A. Baak; H.J. Bulten; G. Raven; H. Snoek; P. David; H. Schroder; N. de Groot; Z. Yu

doi:10.1103/PhysRevD.72.051101

Measurement of the B+-> p(p)over-barK(+) branching fraction and study of the decay dynamics

B. Aubert
, J.Y. Chen
, K. Peters
, L.L. Zhang
, S. Chen
, M.C. Simani
, X.H. Li
, M.A. Baak
, H.J. Bulten
, G. Raven
, H. Snoek
, P. David
, H. Schroder
, N. de Groot
, Z. Yu

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

With a sample of 232×106 Υ(4S)→B¯¯¯B events collected with the BABAR detector, we study the decay B+→p¯pK+ excluding charmonium decays to p¯p. We measure a branching fraction B(B+→p¯pK+)=(6.7±0.5±0.4)×10−6. An enhancement at low p¯p 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 2.00 GeV/c2 and set limits on B(B+→Θ*++¯p)×B(Θ*++→pK+) at the 10−7 level.

Original language	English
Article number	051101(R)
Journal	Physical Review D
Volume	72
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.72.051101
Publication status	Published - 6 Sept 2005

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Aubert, B., Chen, J. Y., Peters, K., Zhang, L. L., Chen, S., Simani, M. C., Li, X. H., Baak, M. A., Bulten, H. J., Raven, G., Snoek, H., David, P., Schroder, H., de Groot, N., & Yu, Z. (2005). Measurement of the B+-> p(p)over-barK(+) branching fraction and study of the decay dynamics. Physical Review D, 72(5), Article 051101(R). https://doi.org/10.1103/PhysRevD.72.051101

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title = "Measurement of the B+-> p(p)over-barK(+) branching fraction and study of the decay dynamics",

abstract = "With a sample of 232×106 Υ(4S)→B¯¯¯B events collected with the BABAR detector, we study the decay B+→p¯pK+ excluding charmonium decays to p¯p. We measure a branching fraction B(B+→p¯pK+)=(6.7±0.5±0.4)×10−6. An enhancement at low p¯p 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 2.00 GeV/c2 and set limits on B(B+→Θ*++¯p)×B(Θ*++→pK+) at the 10−7 level.",

author = "B. Aubert and J.Y. Chen and K. Peters and L.L. Zhang and S. Chen and M.C. Simani and X.H. Li and M.A. Baak and H.J. Bulten and G. Raven and H. Snoek and P. David and H. Schroder and \{de Groot\}, N. and Z. Yu",

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doi = "10.1103/PhysRevD.72.051101",

language = "English",

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T1 - Measurement of the B+-> p(p)over-barK(+) branching fraction and study of the decay dynamics

AU - Aubert, B.

AU - Chen, J.Y.

AU - Peters, K.

AU - Zhang, L.L.

AU - Chen, S.

AU - Simani, M.C.

AU - Li, X.H.

AU - Baak, M.A.

AU - Bulten, H.J.

AU - Raven, G.

AU - Snoek, H.

AU - David, P.

AU - Schroder, H.

AU - de Groot, N.

AU - Yu, Z.

PY - 2005/9/6

Y1 - 2005/9/6

N2 - With a sample of 232×106 Υ(4S)→B¯¯¯B events collected with the BABAR detector, we study the decay B+→p¯pK+ excluding charmonium decays to p¯p. We measure a branching fraction B(B+→p¯pK+)=(6.7±0.5±0.4)×10−6. An enhancement at low p¯p 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 2.00 GeV/c2 and set limits on B(B+→Θ*++¯p)×B(Θ*++→pK+) at the 10−7 level.

AB - With a sample of 232×106 Υ(4S)→B¯¯¯B events collected with the BABAR detector, we study the decay B+→p¯pK+ excluding charmonium decays to p¯p. We measure a branching fraction B(B+→p¯pK+)=(6.7±0.5±0.4)×10−6. An enhancement at low p¯p 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 2.00 GeV/c2 and set limits on B(B+→Θ*++¯p)×B(Θ*++→pK+) at the 10−7 level.

U2 - 10.1103/PhysRevD.72.051101

DO - 10.1103/PhysRevD.72.051101

M3 - Article

SN - 1550-7998

VL - 72

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 051101(R)

ER -

Measurement of the B+-> p(p)over-barK(+) branching fraction and study of the decay dynamics

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