Improved Limit on the Branching Fraction of the Rare Decay K[superscript 0][subscript s] → μ[superscript +]μ[superscript -]
Name
s10052-017-5230-x_pdfa.pdf
Size
864.25 KB
Format
Adobe PDF
Checksum (MD5)
fa07fec41030ced0ca06905eeddf210c
Author(s)
Boettcher, Thomas Julian
Ilten, Philip J
Williams, Michael
Date Issued
October 2017
Journal
The European Physical Journal C
Publisher
Springer/Società Italiana di Fisica
Citation
LHCb Collaboration, et al. “Improved Limit on the Branching Fraction of the Rare Decay K[superscript 0][subscript s] → μ[superscript +]μ[superscript -].” The European Physical Journal C, vol. 77, no. 10, Oct. 2017. © 2017 CERN for the benefit of the LHCb collaboration
Version
Final published version
Abstract
A search for the decay K[subscript 0][subscript s]→μ[superscript +]μ[superscript -] is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3fb[superscript -1], collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The observed yield is consistent with the background-only hypothesis, yielding a limit on the branching fraction of B(K[superscript 0][subscript S]→μ[superscript +]μ[superscript -])<0.8(1.0)×10[superscript -9] at 90%(95%) confidence level. This result improves the previous upper limit on the branching fraction by an order of magnitude.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-017-5230-x
