Search for heavy neutral leptons in decays of W bosons produced in 13 TeV pp collisions using prompt and displaced signatures with the ATLAS detector
13000 GeV-cms
QC770-798
W: leptonic decay
Atomic
7. Clean energy
01 natural sciences
510
High Energy Physics - Experiment
Subatomär fysik
High Energy Physics - Experiment (hep-ex)
Particle and Plasma Physics
Hadron-Hadron scattering (experiments)
Subatomic Physics
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Collisions
neutrino: mass
info:eu-repo/classification/ddc/530
Mathematical Physics
Quantum Physics
proton–proton collisions
scale: electroweak interaction
ddc:530
Particle physics
VDP::Kjerne- og elementærpartikkelfysikk: 431
Particle and High Energy Physics
ATLAS
Nuclear and Plasma Physics
Nuclear & Particles Physics
Settore FIS/01 - FISICA SPERIMENTALE
:Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP]
Nuclear and plasma physics
transverse
CERN LHC Coll
Particle and high energy physics
Mathematical physics
neutrino: right-handed
mass: Majorana
Physical Sciences
neutrino: Majorana
vertex: primary
signature
asymmetry
Materia oscura (astronomía)
Bosone
jets
p p: scattering
topology
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]
Regular Article - Experimental Physics
VDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431
FOS: Physical sciences
530
dark matter
dilepton
Nuclear and particle physics. Atomic energy. Radioactivity
539
0103 physical sciences
neutrino/mu
Nuclear
High Energy Physics
High energy physics
Neutrinos
S077A00
S077A01
ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика
VDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431
hep-ex
Matemática física y química
:Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP]
neutrino/e
500
Molecular
Física
neutrino: heavy
Hadron-Hadron scattering
Experimental High Energy Physics
Hadron-hadron collisions
neutrino: mixing
p p: colliding beams
experimental results
DOI:
10.1007/jhep10(2019)265
Publication Date:
2019-11-21T00:42:31Z
AUTHORS (2941)
ABSTRACT
Abstract
The problems of neutrino masses, matter-antimatter asymmetry, and dark matter could be successfully addressed by postulating right-handed neutrinos with Majorana masses below the electroweak scale. In this work, leptonic decays of W bosons extracted from 32.9 fb
−1 to 36.1 fb
−1 of 13 TeV proton–proton collisions at the LHC are used to search for heavy neutral leptons (HNLs) that are produced through mixing with muon or electron neutrinos. The search is conducted using the ATLAS detector in both prompt and displaced leptonic decay signatures. The prompt signature requires three leptons produced at the interaction point (either μμe or eeμ) with a veto on same-flavour opposite-charge topologies. The displaced signature comprises a prompt muon from the W boson decay and the requirement of a dilepton vertex (either μμ or μe) displaced in the transverse plane by 4–300 mm from the interaction point. The search sets constraints on the HNL mixing to muon and electron neutrinos for HNL masses in the range 4.5–50 GeV.
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