The decay (B) over bar (0)(s) (->) J/psi K+K- is investigated using 0:16 fb(-)1 of data collected with the LHCb detector using 7 TeV pp collisions. Although the J/psi phi 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) over bar (0)(s) (->) J/psi f'(2)(1525))/(B)over bar>(0)(s) (->) J/psi phi)=(26.4 +/- 2.7 +/- 2.4)%

Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2012). Observation of B̄s0→J/ψf2′(1525) in J/ψK +K - final states. PHYSICAL REVIEW LETTERS, 108(15), 1-7 [10.1103/PhysRevLett.108.151801].

Observation of B̄s0→J/ψf2′(1525) in J/ψK +K - final states

CALVI, MARTA;FANCHINI, ERICA;Pessina, G;
2012

Abstract

The decay (B) over bar (0)(s) (->) J/psi K+K- is investigated using 0:16 fb(-)1 of data collected with the LHCb detector using 7 TeV pp collisions. Although the J/psi phi 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) over bar (0)(s) (->) J/psi f'(2)(1525))/(B)over bar>(0)(s) (->) J/psi phi)=(26.4 +/- 2.7 +/- 2.4)%
Articolo in rivista - Articolo scientifico
flavor physics ; B physics ; particle and resonance production ; experimental results
English
2012
108
15
1
7
151801
none
Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2012). Observation of B̄s0→J/ψf2′(1525) in J/ψK +K - final states. PHYSICAL REVIEW LETTERS, 108(15), 1-7 [10.1103/PhysRevLett.108.151801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/38285
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