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First observation and study of the decay
2 Collaboration, J. R. Batley, G. Kalmus +121
The NA48/2 experiment at CERN reports the first observation of the decay based on a sample of 2437 candidates with 15% background contam…
Search for Heavy Neutrinos in Decays
The NA62 Collaboration
The NA62 experiment recorded a large sample of decays in 2007. A peak search has been performed in the reconstructed missing mass spectrum. In the absence…
Searches for Lepton Number Violation and Resonances in Decays
2 collaboration
The NA48/2 experiment at CERN collected a large sample of charged kaon decays to final states with multiple charged particles in 2003--2004. A new upper limit on the rate of the le…
Recent NA48/2 and NA62 results
F. Ambrosino, A. Antonelli, G. Anzivino +156
The NA48/2 Collaboration at CERN has accumulated and analysed unprecedented statistics of rare kaon decays in the modes: () and $K_…
New measurement of the charged kaon semileptonic (Ke4) decay Branching Ratio and Hadronic Form Factors
2 Collaboration
A sample of more than one million Ke4 decay candidates with less than one percent background contamination has been collected by the NA48/2 experiment at the CERN SPS in 2003-2004,…
Test of Lepton Flavour Universality in K+ --> l+nu Decays
C. Lazzeroni et al.
A precision test of lepton flavour universality has been performed by measuring the ratio RK of kaon leptonic decay rates K+ --> e+nu and K+ --> mu+nu in a sample of 59813 reconstr…