Explanipedia

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

J. R. Batley, G. Kalmus, C. Lazzeroni, D.J. Munday, M. W. Slater , et al. · 2024

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

NA Collaboration, NULL AUTHOR_ID, J. R. Batley, G. Kalmus, C. Lazzeroni , et al. · 2023

The NA48/2 experiment at CERN reports the first observation of the $K^{\pm} \rightarrow π^{0} π^{0} μ^{\pm} ν$ decay based on a sample of 2437 candidates with 15% background contamination collected in 2003--2004. The decay branching ratio …

Cooling and Timing Tests of the ATLAS Fast TracKer VME Boards Open

S. Sottocornola, A. Annovi, N. V. Biesuz, E. Brost, M. Calvetti , et al. · 2021

The Fast TracKer (FTK) is an ATLAS trigger upgrade built for full-event, low-latency, high-rate tracking. The FTK core, made of 9U VME boards, performs the most demanding computational task. The associative memory board (AMB) serial link p…

Pattern-Matching Unit for Medical Applications Open

Orlando Leombruni, Alberto Annovi, P. Giannetti, N. V. Biesuz, C. Roda , et al. · 2021

We explore the application of concepts developed in High Energy Physics (HEP) for advanced medical data analysis. Our study case is a problem with high social impact: clinically-feasible Magnetic Resonance Fingerprinting (MRF). MRF is a ne…

Latest results on rare kaon decays from the NA48/2 experiment at CERN Open

M. Raggi, G. Anzivino, R. Arcidiacono, W. Baldini, S. Balev , et al. · 2021

The NA48/2 experiment at CERN reports the first observation of the K->pi0e+e-decay from an exposure of 1.7x10^11 charged kaon decays recorded in 2003-2004. A sample of 4919candidates with 4.9% background contamination allows the determinat…

Les Houches 2019: Physics at TeV Colliders: Standard Model Working Group Report Open

S. Amoroso, P. Azzurri, G. Bauer, Enrico Bothmann, D. Britzger , et al. · 2020

This Report summarizes the proceedings of the 2019 Les Houches workshop on Physics at TeV Colliders. Session 1 dealt with (I) new developments for high precision Standard Model calculations, (II) the sensitivity of parton distribution func…

Simplified Template Cross Sections -- Stage 1.1 and 1.2 Open

N. Berger, C. Bertella, T. P. Calvet, M. Calvetti, V. Dao , et al. · 2019

Simplified Template Cross Sections (STXS) have been adopted by the LHC experiments as a common framework for Higgs measurements. Their purpose is to reduce the theoretical uncertainties that are directly folded into the measurements as muc…

Simplified Template Cross Sections - Stage 1.1 Open

N. Berger, C. Bertella, T. P. Calvet, M. Calvetti, V. Dao , et al. · 2019

Simplified Template Cross Sections (STXS) have been adopted by the LHC experiments as a common framework for Higgs measurements. Their purpose is to reduce the theoretical uncertainties that are directly folded into the measurements as muc…

First observation and study of the K± → π±π0e+e− decay Open

J. R. Batley, G. Kalmus, C. Lazzeroni, D.J. Munday, M. Slater , et al. · 2018

Integration and Commissioning of the ATLAS Fast TracKer system Open

M. Calvetti, N. V. Biesuz · 2018

The Fast TracKer (FTK) system is a track reconstruction processor designed to perform full event tracking synchronously with the ATLAS Level 1 trigger acceptance rate. The high-quality tracks produced by the system will be used by High Lev…

Recent QCD results from the NA48/2 experiment Open

G. Anzivino, G. Anzivino, R. Arcidiacono, W. Baldini, S. Balev , et al. · 2018

Tracking and flavour tagging selection in the ATLAS High Level Trigger Open

M. Calvetti · 2017

In high-energy physics experiments, track based selection in the online environment is crucial for the efficient real time selection of the rare physics process of interest. This is of particular importance at the Large Hadron Collider (LH…

Neutral pion form factor measurement by the NA62 experiment Open

M. Zamkovsky, F. Ambrosino, A. Antonelli, G. Anzivino, R. Arcidiacono , et al. · 2017

The NA62 experiment at CERN collected a large sample of charged kaon decays with a highly efficient trigger for decays into electrons in 2007. The kaon beam represents a source of tagged neutral pion decays in vacuum. A measurement of the …

Searches for lepton number violation and resonances in K±→πμμ decays Open

J. R. Batley, G. Kalmus, C. Lazzeroni, D.J. Munday, M. Slater , et al. · 2017

Model independent measurement of the leptonic kaon decay K+- ->mu+- nu e+ e- with the NA48/2 experiment Open

R. Marchevski, G. Anzivino, R. Arcidiacono, W. Baldini, S. Balev , et al. · 2017

A measurement of the branching ratio of the rare leptonic kaon decay K ± → μ ± ν μ e + e − is pre- sented using data collected by the NA48/2 experiment in 2003 and 2004. The measurement is performed in the region M ee > 140 MeV/c 2 . In th…

Recent results from NA48/2 and NA62 Experiments at CERN Open

N. Lurkin, F. Ambrosino, A. Antonelli, G. Anzivino, R. Arcidiacono , et al. · 2017

The NA48/2 and $\\text{NA62}\\text{-}{\\text{R}_\\text{K}}$ experiments at the CERN SPS collected a large sample of charged kaon decays in flight. $\\text{NA62}\\text{-}{\\text{R}_\\text{K}}$ was running in 2007-08 with a highly efficient …

Neutral pion form factor measurement at NA62 Open

E. Goudzovski, F. Ambrosino, A. Antonelli, G. Anzivino, R. Arcidiacono , et al. · 2016

The NA62 experiment at CERN collected a large sample of charged kaon decays with a highly efficient trigger for decays into electrons in 2007. The kaon beam represents a source of tagged neutral pion decays in vacuum. A measurement of the …

Searches for lepton number violation and resonances in $K^{\pm} \to π μ μ$ decays with the NA48/2 experiment Open

R. Marchevski, A. Cotta Ramusino, M. De Beer, T. Fonseca Martin, S. Goy López , et al. · 2016

The NA48/2 experiment at CERN collected a large sample of\n charged kaon decays into final states with multiple charged\n particles in 2003-2004. An upper limit of $8.6 \\times 10^{-11}$ at\n 90~$\\%$~CL is set on the branching ratio of th…

Precision tests of the Standard Model with Kaon decays at CERN Open

G. Lamanna, F. Ambrosino, A. Antonelli, G. Anzivino, R. Arcidiacono , et al. · 2016

Effects of new physics in flavor could be found both in Flavor Changing Neutral Current (FCNC) processes and in Lepton Flavor Violation (LFV) modes. The former offer the possibility to deeply test the standard model in a clean environment,…

ChPT tests at the NA48 and NA62 experiments at CERN Open

Na Collaborations, F. Ambrosino, A. Antonelli, G. Anzivino, R. Arcidiacono , et al. · 2016

The NA48/2 Collaboration at CERN has accumulated unprecedented statistics of rare kaon decays in the Ke4 modes: Ke4(+-) ($K^\pm \to \pi^+ \pi^- e^\pm \nu$) and Ke4(00) ($K^\pm \to \pi^0 \pi^0 e^\pm \nu$) with nearly one percent background …

ChPT tests at the NA48 and NA62 experiments at CERN Open

Na, Na Collaborations, NULL AUTHOR_ID, F. Ambrosino, A. Antonelli , et al. · 2016

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) ($K^\pm \to π^0 π^0 e^\pm ν$) with nearly one percent background contaminatio…

Search for the dark photon indecays Open

J. R. Batley, G. Kalmus, C. Lazzeroni, D.J. Munday, M. Slater , et al. · 2015

First observation of K± → π±π0e+e- decay at NA48 Open

R. Fantechi, G. Anzivino, R. Arcidiacono, W. Baldini, S. Balev , et al. · 2015

We report here the first observation by the NA48/2 experiment of the rare decay K± → π±π0e+e-. From a sample of about 2000 decay candidates collected in 2003, a preliminary value of the branching ratio in the full kinematic space has been …

First observation and study of $K^\pm \to \pi^\pm \pi^0 e^+ e^-$ decay at the NA48/2 experiment Open

M. Misheva, K. Eppard, A. Nappi, P. Dalpiaz, J. R. Batley , et al. · 2015

A sample of almost 2000 $K^\\pm \\to \\pi^\\pm \\pi^0 e^+ e^-$ rare decays with a background contamination below 3% is observed for the first time by the NA48/2 experiment at CERN/SPS. The preliminary branching ratio in the full kinematic …

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