publication . Other literature type . Article . Preprint . 2018

Search for lepton-flavour-violating decays of the $Z$ boson into a $\tau$-lepton and a light lepton with the ATLAS detector

Aaboud, Morad; Aad, Georges; Abbott, Brad; Abdinov, Ovsat; Abeloos, Baptiste; Abhayasinghe, Deshan Kavishka; Abidi, Syed Haider; Abouzeid, Ossama; Abraham, Nicola; Abramowicz, Halina; ...
  • Published: 01 Nov 2018
  • Publisher: Stichting SciPost
Abstract
Direct searches for lepton flavor violation in decays of the $Z$ boson with the ATLAS detector at the LHC are presented. Decays of the $Z$ boson into an electron or a muon and a hadronically decaying $\tau$ lepton are considered. The searches are based on a data sample of proton-proton collisions collected by the ATLAS detector in 2015 and 2016, corresponding to an integrated luminosity of 36.1 fb$^{-1}$ at a center-of-mass energy of $\sqrt{s} = 13$ TeV. No significant excess of events above the expected background is observed, and upper limits on the branching ratios of lepton-flavor-violating decays are set at the 95% confidence level: $\mathcal{B} (Z\to e\tau...
Subjects
arXiv: High Energy Physics::ExperimentHigh Energy Physics::Phenomenology
free text keywords: :Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP], :Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP], Subatomic Physics, Subatomär fysik, hep-ex, scattering [p p], colliding beams [p p], leptonic decay [Z0], flavor: violation [lepton], hadronic decay [tau], branching ratio: upper limit [Z0], (electron tau) [mass spectrum], (muon tau) [mass spectrum], :Ciências Físicas [Ciências Naturais], Science & Technology, Particle Physics - Experiment, Hadron-hadron collisions, mass spectrum: (electron tau), Z0 --> tau muon, Z0 --> tau electron, experimental results, 13000 GeV-cms, mass spectrum: (muon tau), background, ATLAS, CERN LHC Coll, Z0: branching ratio: upper limit, tau: hadronic decay, lepton: flavor: violation, Z0: leptonic decay, p p: colliding beams, p p: scattering, Particle Physics Experiments, S044:Desig=26, S044:Desig=25, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], parton distributions; Z(0), Settore FIS/01 - Fisica Sperimentale, Settore FIS/04 - Fisica Nucleare e Subnucleare, 530 Physics, 530, Z0 --> tau electron, Z0 --> tau muon, Science & Technology, Physical Sciences, Astronomy & Astrophysics, Physics, Particles & Fields, Physics, Physics and Astronomy (miscellaneous), High Energy Physics - Experiment, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], QC, ddc:530, ddc:500.2, Flavour, Particle physics, Lepton, Atlas (anatomy), medicine.anatomical_structure, medicine, W and Z bosons, Physics, Detector
Funded by
EC| EPLANET
Project
EPLANET
European Particle physics Latin American NETwork
  • Funder: European Commission (EC)
  • Project Code: 246806
  • Funding stream: FP7 | SP3 | PEOPLE
,
NSERC
Project
  • Funder: Natural Sciences and Engineering Research Council of Canada (NSERC)
,
EC| COFUND-FP-CERN-2014
Project
COFUND-FP-CERN-2014
COFUNDing of the CERN Fellowship Programme 2014
  • Funder: European Commission (EC)
  • Project Code: 665779
  • Funding stream: H2020 | MSCA-COFUND-FP
Communities
EGI FederationEGI virtual organizations: atlas
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publication . Other literature type . Article . Preprint . 2018

Search for lepton-flavour-violating decays of the $Z$ boson into a $\tau$-lepton and a light lepton with the ATLAS detector

Aaboud, Morad; Aad, Georges; Abbott, Brad; Abdinov, Ovsat; Abeloos, Baptiste; Abhayasinghe, Deshan Kavishka; Abidi, Syed Haider; Abouzeid, Ossama; Abraham, Nicola; Abramowicz, Halina; ...