G. Ruggiero

activity

20002025

most citedA precision measurement of direct CP violation in the decay of neutral kaons into two pions

238 citations · 1.5k across the 48 of their papers we have counts for

collaborators

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44 papers · 1 filter

hep-ex2024★ 13 cited

Observation of the $K^{+} \to π^{+} ν ν ˉ$ decay and measurement of its branching ratio

NA62 Collaboration

A measurement of the $K^{+} \to π^{+} ν ν ˉ$ decay by the NA62 experiment at the CERN SPS is presented, using data collected in 2021 and 2022. This dataset was recorded, afte…

hep-ex2023

Development of a new CEDAR for kaon identification at the NA62 experiment at CERN

The NA62 Collaboration

The NA62 experiment at CERN utilises a differential Cherenkov counter with achromatic ring focus (CEDAR) for tagging kaons within an unseparated monochromatic beam of charged hadro…

hep-ex2023★ 10 cited

Search for Leptonic Decays of Dark Photons at NA62

The NA62 collaboration

The NA62 experiment at CERN, configured in beam-dump mode, has searched for dark photon decays in flight to electron-positron pairs using a sample of $1.4 \times 1 0^{17}$ protons on…

hep-ex2023★ 5 cited

Post-LS3 Experimental Options in ECN3

C. Ahdida, G. Arduini, K. Balazs +47

The Experimental Cavern North 3 (ECN3) is an underground experimental cavern on the CERN Prévessin site. ECN3 currently hosts the NA62 experiment, with a physics programme devoted…

hep-ex2023

First observation and study of the $K^{\pm} \to π^{0} π^{0} μ^{\pm} ν$ decay

2 Collaboration, J. R. Batley, G. Kalmus +121

The NA48/2 experiment at CERN reports the first observation of the $K^{\pm} \to π^{0} π^{0} μ^{\pm} ν$ decay based on a sample of 2437 candidates with 15% background contam…

hep-ex2023★ 5 cited

A study of the $K^{+} \to π^{0} e^{+} ν γ$ decay

The NA62 Collaboration

A sample of $1.3 \times 1 0^{5}$ $K^{+} \to π^{0} e^{+} ν γ$ candidates with less than 1% background was collected by the NA62 experiment at the CERN SPS in 2017-2018. Branching fraction mea…

hep-ex2022★ 15 cited

A measurement of the $K^{+} \to π^{+} μ^{+} μ^{-}$ decay

NA62 Collaboration

A sample of $2.8 \times 1 0^{4}$ $K^{+} \to π^{+} μ^{+} μ^{-}$ candidates with negligible background was collected by the NA62 experiment at the CERN SPS in 2017--2018. The model-inde…

hep-ex2022★ 3 cited

Performance of the NA62 trigger system

The NA62 Collaboration

The NA62 experiment at CERN targets the measurement of the ultra-rare $K^{+} \to π^{+} ν ν ˉ$ decay, and carries out a broad physics programme that includes probes for symmetry vio…

hep-ex2022★ 19 cited

Searches for lepton number violating $K^{+} \to π^{-} (π^{0}) e^{+} e^{+}$ decays

NA62 collaboration

Searches for lepton number violating $K^{+} \to π^{-} e^{+} e^{+}$ and $K^{+} \to π^{-} π^{0} e^{+} e^{+}$ decays have been performed using the complete dataset collected by the NA62 experiment at CERN in 20…

hep-ex2021★ 28 cited

Search for lepton number and flavour violation in $K^{+}$ and $π^{0}$ decays

NA62 Collaboration

Searches for the lepton number violating $K^{+} \to π^{-} μ^{+} e^{+}$ decay and the lepton flavour violating $K^{+} \to π^{+} μ^{-} e^{+}$ and $π^{0} \rightarrow μ…

hep-ex2021★ 155 cited

Measurement of the very rare $K^{+} \to π^{+} ν ν ˉ$ decay

NA62 Collaboration

The NA62 experiment reports the branching ratio measurement BR $(K^{+} \to π^{+} ν ν ˉ) = (10. 6_{- 3.4}^{+ 4.0} ∣_{stat} \pm 0. 9_{syst}) \times 1 0^{- 11}$ at 68% CL, base…

hep-ex2020★ 82 cited

Search for heavy neutral lepton production in $K^{+}$ decays to positrons

NA62 collaboration

A search for heavy neutral lepton ( $N$ ) production in $K^{+} \to e^{+} N$ decays using the data sample collected by the NA62 experiment at CERN in 2017--2018 is reported. Upper limits of…

hep-ex2019★ 46 cited

Searches for lepton number violating $K^{+}$ decays

NA62 collaboration

The NA62 experiment at CERN reports a search for the lepton number violating decays $K^{+} \to π^{-} e^{+} e^{+}$ and $K^{+} \to π^{-} μ^{+} μ^{+}$ using a data sample collected in 2017. No signals are ob…

hep-ex2019★ 72 cited

Search for production of an invisible dark photon in $π^{0}$ decays

NA62 collaboration

The results of a search for $π^{0}$ decays to a photon and an invisible massive dark photon at the NA62 experiment at the CERN SPS are reported. From a total of $4.12 \times 1 0^{8}$ tagg…

hep-ex2018★ 71 cited

First search for $K^{+} \to π^{+} ν ν ˉ$ using the decay-in-flight technique

NA62 collaboration

The NA62 experiment at the CERN SPS reports the first search for $K^{+} \to π^{+} ν ν ˉ$ using the decay-in-flight technique, based on a sample of $1.21 \times 1 0^{11}$ $K^{+}$ de…

hep-ex2018

Search for $K^{+} \to π^{+} ν ν$ at NA62

NA62 Collaboration, G. Aglieri Rinella, R. Aliberti +249

$K^{+} \to π^{+} ν ν$ is one of the theoretically cleanest meson decay where to look for indirect effects of new physics complementary to LHC searches. The NA62 experi…

hep-ex2017★ 34 cited

Search for Heavy Neutrinos in $K^{+} \to μ^{+} ν_{μ}$ Decays

The NA62 Collaboration

The NA62 experiment recorded a large sample of $K^{+} \to μ^{+} ν_{μ}$ decays in 2007. A peak search has been performed in the reconstructed missing mass spectrum. In the absence…

hep-ex2016★ 41 cited

Searches for Lepton Number Violation and Resonances in $K^{\pm} \to π μμ$ 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…

hep-ex2016

Search for $K^{+} \to π^{+} ν ν ˉ$ at NA62

Matthew Moulson

The decay $K^{+} \to π^{+} ν ν ˉ$ is highly suppressed in the Standard Model (SM), while its rate can be predicted with minimal theoretical uncertainty. The branching ratio (BR) for this…

hep-ex2016

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(+-) ( $K^{\pm} \to π^{+} π^{-} e^{\pm} ν$ ) and Ke4(00) ($K^\pm \to π^0 π^…

hep-ex2014

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 $K_{e 4}$ modes: $K_{e 4} (+ -)$ ( $K^{\pm} \to π^{+} π^{-} e^{\pm} ν$ ) and $K_…

hep-ex2013★ 6 cited

Measurement of the branching ratio of the decay $Ξ^{0} \to Σ^{+} μ^{-} ν ˉ_{μ}$

J. R. Batley, G. E. Kalmus, C. Lazzeroni +110

From the 2002 data taking with a neutral kaon beam extracted from the CERN-SPS, the NA48/1 experiment observed 97 $Ξ^{0} \to Σ^{+} μ^{-} ν ˉ_{μ}$ candidates with a backgroun…

hep-ex2012

$R_{K}$ and $K^+\rightarrowπ^+ν\barν with NA62 at CERN SPS

Giuseppe Ruggiero

Recent results a future prospects of the NA62 experiment at CERN SPS are presented. The NA62 experiment performed the most precise measurement of the ratio $R_{K}$ of the $K^+\righta…

hep-ex2012★ 19 cited

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,…

Observation of the K+→π+ννˉ decay and measurement of its branching ratio

Development of a new CEDAR for kaon identification at the NA62 experiment at CERN

Search for Leptonic Decays of Dark Photons at NA62

Post-LS3 Experimental Options in ECN3

First observation and study of the K±→π0π0μ±ν decay

A study of the K+→π0e+νγ decay

A measurement of the K+→π+μ+μ− decay

Performance of the NA62 trigger system

Searches for lepton number violating K+→π−(π0)e+e+ decays

Search for lepton number and flavour violation in K+ and π0 decays

Measurement of the very rare K+→π+ννˉ decay

Search for heavy neutral lepton production in K+ decays to positrons

Searches for lepton number violating K+ decays

Search for production of an invisible dark photon in π0 decays

First search for K+→π+ννˉ using the decay-in-flight technique

Search for K+→π+νν at NA62

Search for Heavy Neutrinos in K+→μ+νμ​ Decays

Searches for Lepton Number Violation and Resonances in K±→πμμ Decays

Search for K+→π+ννˉ at NA62

ChPT tests at the NA48 and NA62 experiments at CERN

Recent NA48/2 and NA62 results

Measurement of the branching ratio of the decay Ξ0→Σ+μ−νˉμ​

RK​ and $K^+\rightarrowπ^+ν\barν with NA62 at CERN SPS

New measurement of the charged kaon semileptonic (Ke4) decay Branching Ratio and Hadronic Form Factors

Observation of the $K^{+} \to π^{+} ν ν ˉ$ decay and measurement of its branching ratio

First observation and study of the $K^{\pm} \to π^{0} π^{0} μ^{\pm} ν$ decay

A study of the $K^{+} \to π^{0} e^{+} ν γ$ decay

A measurement of the $K^{+} \to π^{+} μ^{+} μ^{-}$ decay

Searches for lepton number violating $K^{+} \to π^{-} (π^{0}) e^{+} e^{+}$ decays

Search for lepton number and flavour violation in $K^{+}$ and $π^{0}$ decays

Measurement of the very rare $K^{+} \to π^{+} ν ν ˉ$ decay

Search for heavy neutral lepton production in $K^{+}$ decays to positrons

Searches for lepton number violating $K^{+}$ decays

Search for production of an invisible dark photon in $π^{0}$ decays

First search for $K^{+} \to π^{+} ν ν ˉ$ using the decay-in-flight technique

Search for $K^{+} \to π^{+} ν ν$ at NA62

Search for Heavy Neutrinos in $K^{+} \to μ^{+} ν_{μ}$ Decays

Searches for Lepton Number Violation and Resonances in $K^{\pm} \to π μμ$ Decays

Search for $K^{+} \to π^{+} ν ν ˉ$ at NA62

Measurement of the branching ratio of the decay $Ξ^{0} \to Σ^{+} μ^{-} ν ˉ_{μ}$

$R_{K}$ and $K^+\rightarrowπ^+ν\barν with NA62 at CERN SPS