Observation of the decay (B)over-bar(s)(0) -> chi(c2) K+K- in the phi mass region
File(s)Aaij2018_Article_ObservationOfTheDecayBS0Χc2KKO.pdf (463.79 KB)
Published version
OA Location
Author(s)
Type
Journal Article
Abstract
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 be
B(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 B s 0 mass to be measured as
m(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 s 0 mass is made.
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¯¯¯¯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 B s 0 mass to be measured as
m(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 s 0 mass is made.
Date Issued
2018-08-29
Date Acceptance
2018-08-22
Citation
Journal of High Energy Physics, 2018, 2018 (8)
ISSN
1029-8479
Publisher
Springer Verlag (Germany)
Journal / Book Title
Journal of High Energy Physics
Volume
2018
Issue
8
Copyright Statement
© The Author(s) 2018. © CERN, for the bene t of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons
Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000443813900001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
Flavor physics
B physics
Hadron-Hadron scattering (experiments)
HADRON MASSES
TOOL
Publication Status
Published
Article Number
ARTN 191