T. Husek

activity

20132025

K^{+} \to π^{+} ν ν ˉ

decay

155 citations · 813 across the 36 of their papers we have counts for

collaborators

36 papers

hep-ex2025

Searches for hidden sectors using $K^{+} \to π^{+} X$ decays

NA62 Collaboration

Results from the study of the rare decays $K^{+} \to π^{+} ν ν ˉ$ , $K^{+} \to π^{+} μ^{+} μ^{-}$ and $K^{+} \to π^{+} γ γ$ at the NA62 experiment at CERN are interpreted in terms…

hep-ex2025★ 2 cited

Search for heavy neutral leptons in $π^{+}$ decays to positrons

NA62 Collaboration

A search for heavy neutral lepton ( $N$ ) production in $π^{+} \to e^{+} N$ in-flight decays using data collected by the NA62 experiment at CERN in 2017-2024 is reported. Upper limits for…

hep-ex2025★ 5 cited

Search for hadronic decays of feebly-interacting particles at NA62

NA62 Collaboration

The NA62 experiment at CERN has the capability to collect data in a beam-dump mode, where 400 GeV protons are dumped on an absorber. In this configuration, New Physics particles, i…

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-ex2024★ 3 cited

First detection of a tagged neutrino in the NA62 experiment

NA62 Collaboration

The NA62 experiment at the CERN SPS reports the first detection of a tagged neutrino candidate based on the data collected in 2022. The candidate consists of a $K^+ \rightarrow μ^+…

hep-ph2024★ 1 cited

Neutral-pion decay into an electron-positron pair: A review and update

Tomáš Husek

This work aims to review several aspects of the current status of the rare $π^{0} \to e^{+} e^{-}$ decay. A particular emphasis is made on radiative corrections and detailed interpretation…

hep-ph2024★ 7 cited

The three-pion $K$ -matrix at NLO in ChPT

Jorge Baeza-Ballesteros, Johan Bijnens, Tomáš Husek +3

The three-particle $K$ -matrix, $K_{df, 3}$ , is a scheme-dependent quantity that parametrizes short-range three-particle interactions in the relativistic-field-the…

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-ph2023★ 4 cited

Workshop summary -- Kaons@CERN 2023

G. Anzivino, S. Arguedas Cuendis, V. Bernard +60

Kaon physics is at a turning point -- while the rare-kaon experiments NA62 and KOTO are in full swing, the end of their lifetime is approaching and the future experimental landscap…

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-ph2023★ 19 cited

The isospin-3 three-particle $K$ -matrix at NLO in ChPT

Jorge Baeza-Ballesteros, Johan Bijnens, Tomáš Husek +3

The three-particle $K$ -matrix, $K_{df, 3}$ , is a scheme-dependent quantity that parametrizes short-range three-particle interactions in the relativistic-field-the…

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-ph2022★ 6 cited

Six-meson amplitude in QCD-like theories

Johan Bijnens, Tomáš Husek, Mattias Sjö

We calculate the relativistic six-meson scattering amplitude at low energy within the framework of QCD-like theories with $n$ degenerate quark flavors at next-to-leading order in t…

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-ph2021★ 14 cited

Constraints on leptoquarks from lepton-flavour-violating tau-lepton processes

Tomas Husek, Kevin Monsalvez-Pozo, Jorge Portoles

Leptoquarks are ubiquitous in several extensions of the Standard Model and seem to be able to accommodate the universality-violation-driven $B$ -meson-decay anomalies and the $(g-2)…

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-ph2020

Lepton-flavour violation in hadronic tau decays and $ℓ$ - $τ$ conversion in nuclei

Tomáš Husek, Kevin Monsálvez-Pozo, Jorge Portolés

Within the Standard Model Effective Field Theory framework, with operators up to dimension 6, we perform a model-independent analysis of the lepton-flavour-violating processes invo…

hep-ex2020★ 9 cited

Search for a feebly interacting particle $X$ in the decay $K^{+} \to π^{+} X$

NA62 Collaboration

A search for the $K^{+} \to π^{+} X$ decay, where $X$ is a long-lived feebly interacting particle, is performed through an interpretation of the $K^{+} \to π^{+} ν ν ˉ$ …

hep-ph2020★ 27 cited

Lepton-flavour violation in hadronic tau decays and $μ - τ$ conversion in nuclei

Tomas Husek, Kevin Monsalvez-Pozo, Jorge Portoles

Within the Standard Model Effective Field Theory framework, with operators up to dimension 6, we perform a model-independent analysis of the lepton-flavour-violating processes invo…

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…

Searches for hidden sectors using K+→π+X decays

Search for heavy neutral leptons in π+ decays to positrons

Search for hadronic decays of feebly-interacting particles at NA62

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

First detection of a tagged neutrino in the NA62 experiment

Neutral-pion decay into an electron-positron pair: A review and update

The three-pion K-matrix at NLO in ChPT

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

Search for Leptonic Decays of Dark Photons at NA62

Workshop summary -- Kaons@CERN 2023

A study of the K+→π0e+νγ decay

The isospin-3 three-particle K-matrix at NLO in ChPT

A measurement of the K+→π+μ+μ− decay

Performance of the NA62 trigger system

Six-meson amplitude in QCD-like theories

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

Constraints on leptoquarks from lepton-flavour-violating tau-lepton processes

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

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

Lepton-flavour violation in hadronic tau decays and ℓ-τ conversion in nuclei

Search for a feebly interacting particle X in the decay K+→π+X

Lepton-flavour violation in hadronic tau decays and μ−τ conversion in nuclei

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

Searches for lepton number violating K+ decays

Searches for hidden sectors using $K^{+} \to π^{+} X$ decays

Search for heavy neutral leptons in $π^{+}$ decays to positrons

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

The three-pion $K$ -matrix at NLO in ChPT

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

The isospin-3 three-particle $K$ -matrix at NLO in ChPT

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

Lepton-flavour violation in hadronic tau decays and $ℓ$ - $τ$ conversion in nuclei

Search for a feebly interacting particle $X$ in the decay $K^{+} \to π^{+} X$

Lepton-flavour violation in hadronic tau decays and $μ - τ$ conversion in nuclei

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

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