Observation of the decay B¯s0→χc2<sup>K+</sup><sup>K−</sup> in the ϕ mass region
Name
Aaij2018_Article_ObservationOfTheDecayBS0Χc2KKO.pdf
Description
Published version
Size
508.63 KB
Format
Unknown
Checksum (MD5)
a902ce8edd96c0b113ed41c6b524567e
Author(s)
The LHCb Collaboration
Boettcher, Thomas Julian
Craik, Daniel C
Weisser, Constantin
Williams, Michael
Date Issued
August 1, 2018
Journal
Journal of High Energy Physics
Version
Final published version
Abstract
© 2018, The Author(s). The B¯s0→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 be ℬ(B¯s0→χc2K+K−)ℬ(B¯s0→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¯s0→χc1K+K− allows the Bs0 mass to be measured as m(Bs0)=5366.83±0.25±0.27MeV/c2, where the first uncertainty is statistical and the second systematic. A combination of this result with other LHCb determinations of the Bs0 mass is made.[Figure not available: see fulltext.]
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP08(2018)191
