Journal article
Improved limit on the branching fraction of the rare decay $${{K} ^0_{\mathrm { \scriptscriptstyle S}}} \rightarrow \mu ^+\mu ^-$$
- Abstract:
- A search for the decay $K^0_{\scriptscriptstyle S}\to\mu^+\mu^-$ is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3 fb$^{-1}$, 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 ${\cal B}(K^0_{\scriptscriptstyle S}\to\mu^+\mu^-) < 0.8~(1.0) \times 10^{-9}$ at $90\%~(95\%)$ confidence level. This result improves the previous upper limit on the branching fraction by an order of magnitude.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 861.7KB, Terms of use)
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- Publisher copy:
- 10.1140/epjc/s10052-017-5230-x
Authors
- Publisher:
- Springer
- Journal:
- European Physical Journal C More from this journal
- Volume:
- 77
- Issue:
- 10
- Pages:
- 678
- Publication date:
- 2017-10-01
- Acceptance date:
- 2017-09-18
- DOI:
- EISSN:
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1434-6052
- ISSN:
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1434-6044
- Keywords:
- Pubs id:
-
pubs:702604
- UUID:
-
uuid:bdd4d3e5-73d6-4efc-9fc7-69f058a119ff
- Local pid:
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pubs:702604
- Source identifiers:
-
702604
- Deposit date:
-
2017-11-30
Terms of use
- Copyright holder:
- CERN for the benefit of the LHCb collaboration
- Copyright date:
- 2017
- Notes:
- © CERN for the benefit of the LHCb collaboration 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
- Licence:
- CC Attribution (CC BY)
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