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2006-10-03

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/131415

Search for B+ → X(3872)K+, X(3872) → J/ψγ

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https://doi.org/10.1103/PhysRevD.74.071101

Abstract

In a study of B + → J / ψ γ K + decays, we find evidence for the radiative decay X ( 3872 ) → J / ψ γ with a statistical significance of 3.4 σ . We measure the product of branching fractions B ( B + → X ( 3872 ) K + ) ⋅ B ( X ( 3872 ) → J / ψ γ ) = ( 3.3 ± 1.0 ± 0.3 ) × 10 − 6 , where the uncertainties are statistical and systematic, respectively. We also measure the branching fraction B ( B + → χ c 1 K + ) = ( 4.9 ± 0.2 ± 0.4 ) × 10 − 4 . These results are obtained from ( 287 ± 3 ) million B ¯¯¯ B decays collected at the Υ ( 4 S ) resonance with the BABAR detector at the PEP-II B Factory at SLAC.

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Física de partícules, Experiments

Subject (English)

Particle physics, Experiments

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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GRAUGÉS POUS, Eugeni and BABAR Collaboration. Search for B+ → X(3872)K+, X(3872) → J/ψγ. Physical Review D. 2006. Vol. 74, num. 7, pags. 071101(R). ISSN 1550-7998. [consulted: 9 of August of 2026]. Available at: https://hdl.handle.net/2445/131415

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