The Flavour-Changing Neutral Currents Decay t-->Hq at ATLAS Experiment

The sensitivity of the ATLAS experiment to the top-quark rare decay via flavour-changing neutral currents t --> Hq (q represents c and u quarks) has been studied at sqrt{s} = 14 TeV in the decay mode of ttbar --> HqWb --> WW*q,Wb -->l \nu l \nu j, l^{\pm} \nu b, (l=e, \mu). The Standard...

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Detalles Bibliográficos
Autores principales: Chikovani, Leila, Djobava, Tamar, Grigalashvili, Tamaz
Lenguaje:eng
Publicado: 2005
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/837245
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author Chikovani, Leila
Djobava, Tamar
Grigalashvili, Tamaz
author_facet Chikovani, Leila
Djobava, Tamar
Grigalashvili, Tamaz
author_sort Chikovani, Leila
collection CERN
description The sensitivity of the ATLAS experiment to the top-quark rare decay via flavour-changing neutral currents t --> Hq (q represents c and u quarks) has been studied at sqrt{s} = 14 TeV in the decay mode of ttbar --> HqWb --> WW*q,Wb -->l \nu l \nu j, l^{\pm} \nu b, (l=e, \mu). The Standard Model backgrounds ttbar, ttbar H, WZ and WH have been analysed. The signal and backgrounds were generated via PYTHIA 5.7 and simulated and analysed using ATLFAST 2.51. A branching ratio for t --> Hq -->WW*q as low as 2.0x10^{-3} for m_H=150 GeV and 2.1x10^{-3} for m_H=160 GeV could be discovered at the 5 \sigma level with an integrated luminosity of 100 fb^{-1}.
id cern-837245
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
record_format invenio
spelling cern-8372452023-03-14T20:27:41Zhttp://cds.cern.ch/record/837245engChikovani, LeilaDjobava, TamarGrigalashvili, TamazThe Flavour-Changing Neutral Currents Decay t-->Hq at ATLAS ExperimentParticle Physics - ExperimentThe sensitivity of the ATLAS experiment to the top-quark rare decay via flavour-changing neutral currents t --> Hq (q represents c and u quarks) has been studied at sqrt{s} = 14 TeV in the decay mode of ttbar --> HqWb --> WW*q,Wb -->l \nu l \nu j, l^{\pm} \nu b, (l=e, \mu). The Standard Model backgrounds ttbar, ttbar H, WZ and WH have been analysed. The signal and backgrounds were generated via PYTHIA 5.7 and simulated and analysed using ATLFAST 2.51. A branching ratio for t --> Hq -->WW*q as low as 2.0x10^{-3} for m_H=150 GeV and 2.1x10^{-3} for m_H=160 GeV could be discovered at the 5 \sigma level with an integrated luminosity of 100 fb^{-1}.The sensitivity of the ATLAS experiment to the top-quark rare decay via flavour-changing neutral currents t --> Hq (q represents c and u quarks) has been studied at sqrt{s} = 14 TeV in the decay mode of ttbar --> HqWb --> WW*q,Wb -->l \nu l \nu j, l^{\pm} \nu b, (l=e, \mu). The Standard Model backgrounds ttbar, ttbar H, WZ and WH have been analysed. The signal and backgrounds were generated via PYTHIA 5.7 and simulated and analysed using ATLFAST 2.51. A branching ratio for t --> Hq -->WW*q as low as 2.0x10^{-3} for m_H=150 GeV and 2.1x10^{-3} for m_H=160 GeV could be discovered at the 5 \sigma level with an integrated luminosity of 100 fb^{-1}.The sensitivity of the ATLAS experiment to the top-quark rare decay via flavour-changing neutral currents t --> Hq (q represents c and u quarks) has been studied at sqrt{s} = 14 TeV in the decay mode of ttbar --> HqWb --> WW*q,Wb -->l \nu l \nu j, l^{\pm} \nu b, (l=e, \mu). The Standard Model backgrounds ttbar, ttbar H, WZ and WH have been analysed. The signal and backgrounds were generated via PYTHIA 5.7 and simulated and analysed using ATLFAST 2.51. A branching ratio for t --> Hq -->WW*q as low as 2.0x10^{-3} for m_H=150 GeV and 2.1x10^{-3} for m_H=160 GeV could be discovered at the 5 \sigma level with an integrated luminosity of 100 fb^{-1}.hep-ex/0505079oai:cds.cern.ch:8372452005-05-25
spellingShingle Particle Physics - Experiment
Chikovani, Leila
Djobava, Tamar
Grigalashvili, Tamaz
The Flavour-Changing Neutral Currents Decay t-->Hq at ATLAS Experiment
title The Flavour-Changing Neutral Currents Decay t-->Hq at ATLAS Experiment
title_full The Flavour-Changing Neutral Currents Decay t-->Hq at ATLAS Experiment
title_fullStr The Flavour-Changing Neutral Currents Decay t-->Hq at ATLAS Experiment
title_full_unstemmed The Flavour-Changing Neutral Currents Decay t-->Hq at ATLAS Experiment
title_short The Flavour-Changing Neutral Currents Decay t-->Hq at ATLAS Experiment
title_sort flavour-changing neutral currents decay t-->hq at atlas experiment
topic Particle Physics - Experiment
url http://cds.cern.ch/record/837245
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AT djobavatamar theflavourchangingneutralcurrentsdecaythqatatlasexperiment
AT grigalashvilitamaz theflavourchangingneutralcurrentsdecaythqatatlasexperiment
AT chikovanileila flavourchangingneutralcurrentsdecaythqatatlasexperiment
AT djobavatamar flavourchangingneutralcurrentsdecaythqatatlasexperiment
AT grigalashvilitamaz flavourchangingneutralcurrentsdecaythqatatlasexperiment

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