RT Journal Article
T1 Observation of the decay B¯0s→χc2K+K− in the ϕ mass region
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Alves Junior, Antonio Augusto
A1 Boente García, Óscar
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 Plana, Beatriz
A1 Lucio Martínez, Miriam
A1 Martínez Santos, Diego
A1 Plo Casasus, Máximo
A1 Prisciandaro, James J.
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
K1 Flavor physics
K1 B physics
K1 Hadron-Hadron scattering (experiments)
AB The B¯0s→χc2K+K− decay mode is observed and its branching fraction relative to the corresponding χc1 decay mode, in a ±15 MeV/c2 window around the ϕ mass, is found to beB(B¯0s→χc2K+K−)B(B¯0s→χc1K+K−)=(17.1±3.1±0.4±0.9)%,where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the branching fractions of radiative χc decays. The decay mode B¯0s→χc1K+K− allows the B0s mass to be measured asm(B0s)=5366.83±0.25±0.27 MeV/c2,where the first uncertainty is statistical and the second systematic. A combination of this result with other LHCb determinations of the B 0s mass is made.
PB Springer
SN 1029-8479
YR 2018
FD 2018
LK http://hdl.handle.net/10347/22307
UL http://hdl.handle.net/10347/22307
LA eng
NO Aaij, R., Adeva, B., Adinolfi, M. et al. Observation of the decay B¯0s→χc2K+K− in the ϕ mass region. J. High Energ. Phys. 2018, 191 (2018). https://doi.org/10.1007/JHEP08(2018)191
DS Minerva
RD 24 abr 2026