TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Ruiz Valls, P.
AU  - Sanchez Mayordomo, C.
PY  - 2016
DA  - 2016//
TI  - Observation of the B (s) (0) -> J/psi phi phi decay
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 040
EP  - 18pp
VL  - 03
IS  - 3
PB  - Springer
KW  - B physics
KW  - Branching fraction
KW  - Hadron-Hadron scattering
KW  - QCD
KW  - Spectroscopy
AB  - The B (s) (0) -> J/psi phi phi decay is observed in pp collision data corresponding to an integrated luminosity of 3 fb(-1) recorded by the LHCb detector at centre-of-mass energies of 7 TeV and 8 TeV. This is the first observation of this decay channel, with a statistical significance of 15 standard deviations. The mass of the B (s) (0) meson is measured to be 5367.08 +/- 0.38 +/- 0.15 MeV/c(2). The branching fraction ratio B[B(s)(0) -> J/psi phi phi]/B[B(s)(0) -> J/psi phi] is measured to be 0.0115 +/- 0.0012 (- 0.0009) (+ 0.0005) . In both cases, the first uncertainty is statistical and the second is systematic. No evidence for non-resonant B(s)(0) -> J/psi phi K (+) K (-) or B(s)(0) -> J/psi K (+) K (-) K (+) K (-) decays is found.
SN  - 1029-8479
UR  - http://arxiv.org/abs/1601.05284
UR  - https://doi.org/10.1007/JHEP03(2016)040
DO  - 10.1007/JHEP03(2016)040
LA  - English
N1  - WOS:000372307900001
ID  - LHCbCollaborationAaij_etal2016
ER  -