RT Journal Article
T1 Observation of the decay B0s → η c ϕ and evidence for B  0s → η c π + π −
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Borsato, Martino
A1 Chobanova, Veronika
A1 Cid Vidal, Xabier
A1 Dosil Suárez, Álvaro
A1 Fernández Prieto, Antonio
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Lemos Cid, Edgar
A1 Lucio Martínez, Miriam
A1 Martínez Santos, Diego
A1 Plo Casasus, Máximo
A1 Prisciandaro, Jessica
A1 Ramos Pernas, Miguel
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vieites Díaz, María
A1 Vázquez Sierra, Carlos
K1 B physics
K1 Branching fraction
K1 Flavor physics
K1 Hadron-Hadron scattering (experiments)
AB A study of B0s → η c ϕ and B0s → η c π + π − decays is performed using pp collision data corresponding to an integrated luminosity of 3.0 fb−1, collected with the LHCb detector in Run 1 of the LHC. The observation of the decay B  0s → η c ϕ is reported, where the η c meson is reconstructed in the pp¯, K + K − π + π −, π + π − π + π − and K + K − K + K − decay modes and the ϕ(1020) in the K + K − decay mode. The decay B  0s → J/ψϕ is used as a normalisation channel. Evidence is also reported for the decay B  0s → η c π + π −, where the η c meson is reconstructed in the pp¯decay mode, using the decay B  0s → J/ψπ + π − as a normalisation channel. The measured branching fractions areB(B0s→ηcϕ)=(5.01±0.53±0.27±0.63)×10−4,B(B0s→ηcπ+π−)=(1.76±0.59±0.12±0.29)×10−4,where in each case the first uncertainty is statistical, the second systematic and the third uncertainty is due to the limited knowledge of the external branching fractions.
PB Springer
SN 1029-8479
YR 2017
FD 2017
LK http://hdl.handle.net/10347/22666
UL http://hdl.handle.net/10347/22666
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Observation of the decay B0s → η c ϕ and evidence for B0s → η c π + π − . J. High Energ. Phys. 2017, 21 (2017). https://doi.org/10.1007/JHEP07(2017)021
DS Minerva
RD 24 abr 2026