Evidence for the decay B[subscript S][superscript 0]→[¯ over K][superscript ∗0]μ[superscript +]μ[superscript −]
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13130_2018_Article_8554.pdf
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Ajaltouni, Z.
Akar, S.
Albicocco, P.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Date Issued
July 2018
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
The LHCb collaboration, et al. “Evidence for the Decay B[subscript S][subscript 0] → [¯ over K][superscript ∗ 0]μ[superscript +] μ[superscript −].” Journal of High Energy Physics, vol. 2018, no. 7, July 2018.
Version
Final published version
Abstract
A search for the decay B[superscript 0][subscript S]→[¯ over K][superscript ∗ 0]μ[superscript +] μ[superscript −] is presented using data sets corresponding to 1.0, 2.0 and 1.6 fb[superscript −1] of integrated luminosity collected during pp collisions with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, respectively. An excess is found over the background-only hypothesis with a significance of 3.4 standard deviations. The branching fraction of the [subscript S][subscript 0] → [¯ over K][superscript ∗ 0]μ[superscript +] μ[superscript −] decay is determined to be B([subscript S][subscript 0] → [¯ over K][superscript ∗ 0]μ[superscript +] μ[superscript −])=[2.9±1.0(stat)±0.2(syst)±0.3(norm)]×10[superscript −8], where the first and second uncertainties are statistical and systematic, respectively. The third uncertainty is due to limited knowledge of external parameters used to normalise the branching fraction measurement. Keywords: B physics, FCNC Interaction, Flavor physics, Hadron-Hadron scattering (experiments), Rare decay
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/JHEP07(2018)020
