Observation of the B[0 over s] → J/ψK[0 over S]K ± π ∓ decay
Name
Aaij-2014-Observation of the B.pdf
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Author(s)
LHCb collaboration
Counts, Ian Thomas Hunt
Ilten, Philip J
Williams, Michael
Alternative Title
Observation of the B s 0 → J/ψK S 0 K ± π ∓ decay
Date Issued
July 2014
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag Berlin Heidelberg
Citation
Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, et al. “Observation of the B s 0 → J/ψK S 0 K ± π ∓ Decay.” J. High Energ. Phys. 2014, no. 7 (July 2014).
Version
Final published version
Abstract
Decays of the form B (s) 0 → J/ψK S 0 h + h (′) −(h (′) = K, π) are searched for in proton-proton collision data corresponding to an integrated luminosity of 1.0 fb−1 recorded with the LHCb detector. The first observation of the B s 0 → J/ψK S 0 K ± π ∓ decay is reported, with significance in excess of 10 standard deviations. The B 0 → J/ψK S 0 K + K − decay is also observed for the first time. The branching fraction of B 0 → J/ψK S 0 π + π − is determined, to significantly better precision than previous measurements, using B 0 → J/ψK S 0 as a normalisation channel. Branching fractions and upper limits of the other B (s) 0 → J/ψK S 0 h + h (′) − modes are determined relative to that of the B 0 → J/ψK S 0 π + π − decay.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1007/JHEP07(2014)140
