317 citations · 958 across the 24 of their papers we have counts for
22 papers · 1 filter
Searches for hidden sectors using decays
NA62 Collaboration
Results from the study of the rare decays , and at the NA62 experiment at CERN are interpreted in terms…
Searches for lepton number violating decays
NA62 collaboration
The NA62 experiment at CERN reports a search for the lepton number violating decays and using a data sample collected in 2017. No signals are ob…
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…
Search for at NA62
Matthew Moulson
The decay is highly suppressed in the Standard Model (SM), while its rate can be predicted with minimal theoretical uncertainty. The branching ratio (BR) for this…
ChPT tests at the NA48 and NA62 experiments at CERN
NA48/2, NA62 Collaborations, : +159
The NA48/2 Collaboration at CERN has accumulated unprecedented statistics of rare kaon decays in the Ke4 modes: Ke4(+-) () and Ke4(00) ($K^\pm \to π^0 π^…
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,…
New Precise Measurements of the $\xilamgam$ and $\xisiggam$ Decay Asymmetries
J. R. Batley
The decay asymmetries of the weak radiative Hyperon decays Xi0 \to Lambda gamma and Xi0 \to Sigma0 gamma have been measured with high precision using data of the NA48/1 experiment…
Determination of the S-wave pi pi scattering lengths from a study of K+- -> pi+- pi0 pi0 decays
2 Collaboration
We report the results from a study of the full sample of ~ 6.031 10^7 K+- -> pi+- pi0 pi0 decays recorded by the NA48/2 experiment at the CERN SPS. As first observed in this experi…
Precise measurement of the K+- --> pi+-e+e- decay
2 collaboration
A sample of 7253 decay candidates with 1.0% background contamination has been collected by the NA48/2 experiment at the CERN SPS, allowing a precise measu…
First Observation and Measurement of the Decay K+- -> pi+- e+ e- gamma
2 Collaboration, J. R. Batley
Using the full data set of the NA48/2 experiment, the decay K+- -> pi+- e+ e- gamma is observed for the first time, selecting 120 candidates with 7.3 +- 1.7 estimated background ev…
First observation and branching fraction and decay parameter measurements of the weak radiative decay Xi0 --> Lambda e+e-
NA48 Collaboration
The weak radiative decay Xi0 --> Lambda e+e- has been detected for the first time. We find 412 candidates in the signal region, with an estimated background of 15 +/- 5 events. We…
Measurement of the Dalitz plot slope parameters of the decay
2 Collaboration, J. R. Batley et al.
The distribution of the decays in the Dalitz plot has been measured by the NA48/2 experiment at the CERN SPS with a sample of fully reconstr…
Measurement of the Ratio Gamma(KL -> pi+ pi-)/Gamma(KL -> pi e nu) and Extraction of the CP Violation Parameter |eta+-|
NA48 Collaboration
We present a measurement of the ratio of the decay rates Gamma(KL -> pi+ pi-)/Gamma(KL -> pi e nu), denoted as Gamma(K2pi)/Gamma(Ke3). The analysis is based on data taken during a…
Search for direct CP violation in the decays K\pm \to 3π\pm
2 Collaboration, J. R. Batley
We report a measurement of the direct CP violation asymmetry parameter in charged kaon decays by the NA48/2 experiment at the CERN SPS. The experiment h…
Measurement of K^0_e3 form factors
NA48 collaboration
The semileptonic decay of the neutral K meson, KL -> pi e nu (Ke3), was used to study the strangeness-changing weak interaction of hadrons. A sample of 5.6 million reconstructed ev…
Measurement of the branching ratio of the decay KL -> pi e nu and extraction of the CKM parameter |Vus|
NA48 collaboration
We present a new measurement of the branching ratio R of the decay KL -> pi e nu (Ke3), relative to all charged KL decays with two tracks, based on data taken with the NA48 detecto…
Search for CP violation in K0 -> 3 pi0 decays
NA48 Collaboration
Using data taken during the year 2000 with the NA48 detector at the CERN SPS, a search for the CP violating decay K_S -> 3 pi0 has been performed. From a fit to the lifetime distri…
First observation of the KS->pi0 gamma gamma decay
NA48 Collaboration
Using the NA48 detector at the CERN SPS, 31 KS->pi0 gamma gamma candidates with an estimated background of 13.7 +- 3.2 events have been observed. This first observation leads to a…
Precise measurement of the decay
A. Lai
The decay rate of $\klpgg$ has been measured with the NA48 detector at the CERN SPS. A total of 2558 $\klpgg$ candidates have been observed with a residual background of 3.2%. The…
A precise measurement of the direct CP violation parameter Re(epsilon'/epsilon)
NA48 Collaboration
The direct CP violation parameter Re(epsilon'/epsilon) has been measured from the decay rates of neutral kaons into two pions using the NA48 detector at the CERN SPS. With 3.3 mill…
Measurement of the K_L -> e+ e- e+ e- Decay Rate
A. Lai
The decay rate of the neutral long-lived K meson into the e+ e- e+ e- final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1999, a total of…
A new measurement of direct CP violation in two pion decays of the neutral kaon
The NA48 Collaboration, V. Fanti
The NA48 experiment at CERN has performed a new measurement of direct CP violation, based on data taken in 1997 by simultaneously collecting K_L and K_S decays into pi0pi0 and pi+p…