Improved limit on the branching fraction of the rare decay K0s→μ+ μ-

LHCb Collaboration

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A search for the decay KS0→μ+μ- is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3fb-1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8TeV. The observed yield is consistent with the background-only hypothesis, yielding a limit on the branching fraction of B(KS0→μ+μ-)<0.8(1.0)×10-9 at 90%(95%) confidence level. This result improves the previous upper limit on the branching fraction by an order of magnitude.

Original languageEnglish (US)
Article number678
JournalEuropean Physical Journal C
Volume77
Issue number10
DOIs
StatePublished - Oct 1 2017

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Protons
protons
decay
center of mass
confidence
Luminance
luminosity
collisions
Experiments
energy

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Cite this

Improved limit on the branching fraction of the rare decay K0s→μ+ μ- . / LHCb Collaboration.

In: European Physical Journal C, Vol. 77, No. 10, 678, 01.10.2017.

Research output: Contribution to journalArticle

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abstract = "A search for the decay KS0→μ+μ- is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3fb-1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8TeV. The observed yield is consistent with the background-only hypothesis, yielding a limit on the branching fraction of B(KS0→μ+μ-)<0.8(1.0)×10-9 at 90{\%}(95{\%}) confidence level. This result improves the previous upper limit on the branching fraction by an order of magnitude.",
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AU - Aaij, R.

AU - Adeva, B.

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AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

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AU - Andrews, J. E.

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AU - Artamonov, A.

AU - Artuso, Marina

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

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AB - A search for the decay KS0→μ+μ- is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3fb-1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8TeV. The observed yield is consistent with the background-only hypothesis, yielding a limit on the branching fraction of B(KS0→μ+μ-)<0.8(1.0)×10-9 at 90%(95%) confidence level. This result improves the previous upper limit on the branching fraction by an order of magnitude.

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