Publications associées à First detection of a tagged neutrino in the NA62 experiment

Publications associées (12)

Search for Long-Lived Heavy Neutral Leptons with Muons at the CMS Experiment and Characterisation of Scintillating Fibre Trackers

This PhD thesis presents a search for Heavy Neutral Leptons (HNLs) using data collected by the CMS experiment at the CERN Large Hadron Collider (LHC). HNLs are hypothetical new particles proposed in several theoretical extensions of the Standard Model (SM) ...

EPFL2025

Demonstration of particle tracking with scintillating fibres read out by a SPAD array sensor and application as a neutrino active target

Claudio Bruschini, Edoardo Charbon, Paul Mos, Michael Alan Wayne, Kodai Kaneyasu

Scintillating fibre detectors combine sub-mm resolution particle tracking, precise measurements of the particle stopping power and sub-ns time resolution. Typically, fibres are read out with silicon photomultipliers (SiPM). Hence, if fibres with a few hund ...

Springer2024

Search for long-lived heavy neutral leptons with lepton flavour conserving or violating decays to a jet and a charged lepton

Anna Mascellani, Joanna Malgorzata Wanczyk, Jan Steggemann, Konstantin Androsov

A search for long-lived heavy neutral leptons (HNLs) is presented, which considers the hadronic final state and coupling scenarios involving all three lepton generations in the 2-20 GeV HNL mass range for the first time. Events comprising two leptons (elec ...

SPRINGER2024

Measurement of the D* longitudinal polarization in B0 →d*-τ+ντ decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Brianna Leililani Thielen, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Sara Celani, Serhii Cholak, Elena Graverini, Marie Theres Christin Bachmayer, Maarten Willibrord Uriël Van Dijk, Ettore Zaffaroni, Donal Patrick Hill, Yifei Song, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran, Anni Matilda Kauniskangas, Dimitrios Kaminaris, Federico Ronchetti, Raphaël van Laak, Vitalii Lisovskyi, Luis Miguel Garcia Martin

The longitudinal polarization fraction of the D* meson is measured in B0→D*-τ+ντ decays, where the τ lepton decays to three charged pions and a neutrino, using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8 ...

American Physical Society2024

Search for Heavy Neutral Leptons with LHCb

Serhii Cholak

This thesis presents a search for a beyond the Standard Model (SM) heavy neutral lepton (HNL), which does not interact via any of the SM interactions. This hypothetical particle has been proposed by multiple theories as an extension to the SM, and it could ...

EPFL2023

Measurements of the Higgs boson production cross section and couplings in the W boson pair decay channel in proton-proton collisions at √s=13TeV

Anna Mascellani, Jan Steggemann, Konstantin Androsov

Production cross sections of the standard model Higgs boson decaying to a pair of W bosons are measured in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis targets Higgs bosons produced via gluon fusion, vector boson fusion, and ...

Springer2023

Precision measurement of neutral charm meson mixing parameters

Guillaume Max Pietrzyk

This thesis presents a measurement of the neutral charm meson mixing parameters

y_{C\!P}^{KK} - y_{C\!P}^{K\pi}

and

y_{C\!P}^{\pi\pi} - y_{C\!P}^{K\pi}

using

D^0 \rightarrow K^-K^+

,

D^0 \rightarrow \pi^-\pi^+

and

D^0 \rightarrow K^-\pi^+

decays. ...

EPFL2022

Dirac vs. Majorana HNLs (and their oscillations) at SHiP

Inar Timiryasov

SHiP is a proposed high-intensity beam dump experiment set to operate at the CERN SPS. It is expected to have an unprecedented sensitivity to a variety of models containing feebly interacting particles, such as Heavy Neutral Leptons (HNLs). Two HNLs or mor ...

Springer Nature2020

Low-scale leptogenesis with three heavy neutrinos

Marco Drewes, Juraj Klaric, Valerie Fiona Domcke

Leptogenesis induced by the oscillations of GeV-scale neutrinos provides a minimal and testable explanation of the baryon asymmetry of the Universe. In this work we extend previous studies invoking only two heavy neutrinos to the case of three heavy neutri ...

Springer Nature2019

Energy reconstruction methods in the IceCube neutrino telescope

Xiaoxia Bai, Mathieu Ribordy, Shirit Cohen, Mark Tobin, Matthias Wolf

Accurate measurement of neutrino energies is essential to many of the scientific goals of large-volume neutrino telescopes. The fundamental observable in such detectors is the Cherenkov light produced by the transit through a medium of charged particles cr ...

Iop Publishing Ltd2014

Determination of the atmospheric neutrino flux and searches for new physics with AMANDA-II

Xiaoxia Bai, Mathieu Ribordy, Shirit Cohen, Levent Demirörs

The AMANDA-II detector, operating since 2000 in the deep ice at the geographic South Pole, has accumulated a large sample of atmospheric muon neutrinos in the 100 GeV to 10 TeV energy range. The zenith angle and energy distribution of these events can be u ...

American Physical Society2009

How to find a dark matter sterile neutrino?

Mikhail Chapochnikov, Igor Tkachev, Alexey Boyarsky, Oleg Ruchayskiy

We propose a strategy for how to look for dark matter particles possessing a radiative decay channel and derive constraints on their parameters from observations of x rays from our own Galaxy and its dwarf satellites. When applied to sterile neutrinos in t ...

2006