Evidence for X(3872)->psi(2S)gamma in B-+/--> X(3872)K-+/- Decays and a Study of B -> cc gamma K

B. Aubert; L.L. Zhang; D.S. Bailey; G. Raven; H. Snoek; W. Wang; H. Liu

doi:10.1103/PhysRevLett.102.132001

Evidence for X(3872)->psi(2S)gamma in B-+/--> X(3872)K-+/- Decays and a Study of B -> cc gamma K

B. Aubert, L.L. Zhang, D.S. Bailey, G. Raven, H. Snoek, W. Wang, H. Liu

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Abstract

In a search for B→c¯cγK decays with the BABAR detector, where c¯c includes J/ψ and ψ(2S), and K includes K±, K0S, and K∗(892), we find evidence for X(3872)→J/ψγ and X(3872)→ψ(2S)γ with 3.6σ and 3.5σ significance, respectively. We measure the product of branching fractions B(B±→X(3872)K±)×B(X(3872)→J/ψγ)=[2.8±0.8(stat)±0.1(syst)]×10−6 and B(B±→X(3872)K±)×B(X(3872)→ψ(2S)γ)=[9.5±2.7(stat)±0.6(syst)]×10−6.

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Original language	English
Article number	132001
Pages (from-to)	1-7
Number of pages	7
Journal	Physical Review Letters
Volume	102
Issue number	13
Early online date	30 Mar 2009
DOIs	https://doi.org/10.1103/PhysRevLett.102.132001
Publication status	Published - 3 Apr 2009

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title = "Evidence for X(3872)->psi(2S)gamma in B-+/--> X(3872)K-+/- Decays and a Study of B -> cc gamma K",

abstract = "In a search for B→c¯cγK decays with the BABAR detector, where c¯c includes J/ψ and ψ(2S), and K includes K±, K0S, and K∗(892), we find evidence for X(3872)→J/ψγ and X(3872)→ψ(2S)γ with 3.6σ and 3.5σ significance, respectively. We measure the product of branching fractions B(B±→X(3872)K±)×B(X(3872)→J/ψγ)=[2.8±0.8(stat)±0.1(syst)]×10−6 and B(B±→X(3872)K±)×B(X(3872)→ψ(2S)γ)=[9.5±2.7(stat)±0.6(syst)]×10−6. Figure Figure Figure ",

author = "B. Aubert and L.L. Zhang and D.S. Bailey and G. Raven and H. Snoek and W. Wang and H. Liu",

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T1 - Evidence for X(3872)->psi(2S)gamma in B-+/--> X(3872)K-+/- Decays and a Study of B -> cc gamma K

AU - Aubert, B.

AU - Zhang, L.L.

AU - Bailey, D.S.

AU - Raven, G.

AU - Snoek, H.

AU - Wang, W.

AU - Liu, H.

PY - 2009/4/3

Y1 - 2009/4/3

N2 - In a search for B→c¯cγK decays with the BABAR detector, where c¯c includes J/ψ and ψ(2S), and K includes K±, K0S, and K∗(892), we find evidence for X(3872)→J/ψγ and X(3872)→ψ(2S)γ with 3.6σ and 3.5σ significance, respectively. We measure the product of branching fractions B(B±→X(3872)K±)×B(X(3872)→J/ψγ)=[2.8±0.8(stat)±0.1(syst)]×10−6 and B(B±→X(3872)K±)×B(X(3872)→ψ(2S)γ)=[9.5±2.7(stat)±0.6(syst)]×10−6. Figure Figure Figure

AB - In a search for B→c¯cγK decays with the BABAR detector, where c¯c includes J/ψ and ψ(2S), and K includes K±, K0S, and K∗(892), we find evidence for X(3872)→J/ψγ and X(3872)→ψ(2S)γ with 3.6σ and 3.5σ significance, respectively. We measure the product of branching fractions B(B±→X(3872)K±)×B(X(3872)→J/ψγ)=[2.8±0.8(stat)±0.1(syst)]×10−6 and B(B±→X(3872)K±)×B(X(3872)→ψ(2S)γ)=[9.5±2.7(stat)±0.6(syst)]×10−6. Figure Figure Figure

U2 - 10.1103/PhysRevLett.102.132001

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Evidence for X(3872)->psi(2S)gamma in B-+/--> X(3872)K-+/- Decays and a Study of B -> cc gamma K

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