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Search for K0S(L) → π+ π− μ+ μ− decays at LHCb

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A search for 𝐾0S⁡(L) →𝜋+⁢𝜋−⁢𝜇+⁢𝜇− decays is performed using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb−1. No 𝐾0S⁡(L) →𝜋+⁢𝜋−⁢𝜇+⁢𝜇− signals are found and upper limits are set for the first time...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Carus, Leon (Author) , Caspary, Rowina (Author) , Cocha Toapaxi, Carlos (Author) , Dittmann, Lucas (Author) , Glaser, Fabian (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Herrero Gascón, Paula (Author) , Kolb, Ruben (Author) , Langenbruch, Christoph (Author) , Leverington, Blake (Author) , Marks, Jörg (Author) , Morgenthaler, Maurice Pierre (Author) , Ruiz Diaz, Miguel (Author) , Schiller, Manuel (Author) , Tat, Martin Duy (Author) , Tuci, Giulia (Author) , Uecker, Lennart Henning (Author) , Uwer, Ulrich (Author) , Wang, Chishuai (Author) , Wolf, Tom (Author) , Zhao, Ya (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 2 April, 2026
In: Physical review
Year: 2026, Volume: 113, Issue: 7, Pages: 1-13
ISSN:2470-0029
DOI:10.1103/s1dv-cv1t
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/s1dv-cv1t
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/s1dv-cv1t
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Author Notes:R. Aaij et al. (LHCb Collaboration*)
Description
Summary:A search for 𝐾0S⁡(L) →𝜋+⁢𝜋−⁢𝜇+⁢𝜇− decays is performed using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb−1. No 𝐾0S⁡(L) →𝜋+⁢𝜋−⁢𝜇+⁢𝜇− signals are found and upper limits are set for the first time on the branching fractions ℬ(𝐾0S→𝜋+⁢𝜋−⁢𝜇+⁢𝜇−)<1.4×10−9 and ℬ(𝐾0L→𝜋+⁢𝜋−⁢𝜇+⁢𝜇−)<6.6×10−7, at the 90% confidence level.
Item Description:Veröffentlicht: 2. April 2026
Im Titel ist die Zahl 0 hochgestellt, der Ausdruck „S(L)“ tiefgestellt, dabei steht 0 über S, die Plus- und Minuszeichen sind jeweils hochstellt
*LHCb Collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, C. Cocha Toapaxi, L. Dittmann, F.C. Glaser, X. Han, S. Hansmann-Menzemer, P. Herrero Gascon, R. Kolb, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, M. Ruiz Diaz, M. Schiller, M.D. Tat, G. Tuci, L.H. Uecker, U. Uwer, C. Wang, T. Wolf, Y. Zhao, A. Zhelezov [und 1179 weitere Personen]
Gesehen am 19.08.2026
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/s1dv-cv1t

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