1.
Phys Rev Lett
; 127(13): 131802, 2021 Sep 24.
Article
in English
| MEDLINE
| ID: mdl-34623867
ABSTRACT
Searches for the lepton number violating K^{+}âπ^{-}µ^{+}e^{+} decay and the lepton flavor violating K^{+}âπ^{+}µ^{-}e^{+} and π^{0}âµ^{-}e^{+} decays are reported using data collected by the NA62 experiment at CERN in 2017-2018. No evidence for these decays is found and upper limits of the branching ratios are obtained at 90% confidence level: B(K^{+}âπ^{-}µ^{+}e^{+})<4.2×10^{-11}, B(K^{+}âπ^{+}µ^{-}e^{+})<6.6×10^{-11} and B(π^{0}âµ^{-}e^{+})<3.2×10^{-10}. These results improve by 1 order of magnitude over previous results for these decay modes.
2.
Phys Rev D Part Fields
; 54(11): 7067-7070, 1996 Dec 01.
Article
in English
| MEDLINE
| ID: mdl-10020715
3.
Phys Rev D Part Fields
; 52(9): 4839-4854, 1995 Nov 01.
Article
in English
| MEDLINE
| ID: mdl-10019708
4.
Phys Rev D Part Fields
; 48(7): 3037-3044, 1993 Oct 01.
Article
in English
| MEDLINE
| ID: mdl-10016557
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Phys Rev D Part Fields
; 47(3): 772-783, 1993 Feb 01.
Article
in English
| MEDLINE
| ID: mdl-10015638
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