RT Journal Article
T1 Measurement of the B  0s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Dosil Suárez, Álvaro
A1 Fernández Albor, Víctor Manuel
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Hernando Morata, José Ángel
A1 Lucio Martínez, Miriam
A1 Martínez Santos, Diego
A1 Plo Casasus, Máximo
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vázquez Sierra, Carlos
A1 Vieites Díaz, María
K1 Hadron-hadron scattering
K1 Branching fraction
K1 B physics
K1 Flavor physics
AB Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B  0s → ϕϕ branching fraction is measured to beB(B0s→ϕϕ)=(1.84±0.05(stat)±0.07(syst)±0.11(fs/fd)±0.12(norm))×10−5,where f s /f d represents the ratio of the B  0s to B 0 production cross-sections, and the B 0 → ϕK *(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B 0 → ϕϕ is also made. No signal is observed, and an upper limit on the branching fraction is set asB(B0→ϕϕ)<2.8×10−8at 90% confidence level. This is a factor of seven improvement compared to the previous best limit.
PB Springer
YR 2015
FD 2015
LK http://hdl.handle.net/10347/21694
UL http://hdl.handle.net/10347/21694
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Measurement of the B  0s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ . J. High Energ. Phys. 2015, 53 (2015). https://doi.org/10.1007/JHEP10(2015)053
DS Minerva
RD 3 may 2026