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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/133696
Observation of ¯¯¯B0s→J/ψf′2(1525) in J/ψK+K− Final States
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The decay ¯¯¯ B 0 s → J / ψ K + K − is investigated using 0.16 fb − 1 of data collected with the LHCb detector using 7 TeV p p collisions. Although the J / ψ ϕ channel is well known, final states at higher K + K − masses have not previously been studied. In the K + K − mass spectrum we observe a significant signal in the f ′ 2 ( 1525 ) region as well as a nonresonant component. After subtracting the nonresonant component, we find B ( ¯¯¯ B 0 s → J / ψ f ′ 2 ( 1525 ) ) / B ( ¯¯¯ B 0 s → J / ψ ϕ ) = ( 26.4 ± 2.7 ± 2.4 ) % .
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ABELLAN BETETA, Carlos, et al. Observation of ¯¯¯B0s→J/ψf′2(1525) in J/ψK+K− Final States. Physical Review Letters. 2012. Vol. 108, núm. 15, pàgs. 151801. ISSN 0031-9007. [consulta: 11 de maig de 2026]. Disponible a: https://hdl.handle.net/2445/133696