Investigating The Higgs Boson Decays Into A Pair Of B And C Quarks With The Atlas Detector At The Lhc And Development Of Machine Learning Methods For Particle Flow Reconstruction
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Investigating The Higgs Boson Decays Into A Pair Of B And C Quarks With The Atlas Detector At The Lhc And Development Of Machine Learning Methods For Particle Flow Reconstruction
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Author : Matteo Tusoni
language : en
Publisher:
Release Date : 2023
Investigating The Higgs Boson Decays Into A Pair Of B And C Quarks With The Atlas Detector At The Lhc And Development Of Machine Learning Methods For Particle Flow Reconstruction written by Matteo Tusoni and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.
Machine Learning Applications And Observation Of Higgs Boson Decays Into A Pair Of Bottom Quarks With The Atlas Detector
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Author : Cecilia Tosciri
language : en
Publisher:
Release Date : 2020
Machine Learning Applications And Observation Of Higgs Boson Decays Into A Pair Of Bottom Quarks With The Atlas Detector written by Cecilia Tosciri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Higgs Boson Decays To B Bbar With Associated T Quarks With The Atlas Detector At The Large Hadron Collider
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Author : Azzah Al-Shehri
language : en
Publisher:
Release Date : 2018
Higgs Boson Decays To B Bbar With Associated T Quarks With The Atlas Detector At The Large Hadron Collider written by Azzah Al-Shehri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Search For The Higgs Boson Decaying To A Pair Of Bottom Quarks And Produced In Association With A Pair Of Top Quarks In The Lhc Run 2 Data With The Atlas Detector Using A Likelihood Technique
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Author : Yulia Rodina
language : en
Publisher:
Release Date : 2017
Search For The Higgs Boson Decaying To A Pair Of Bottom Quarks And Produced In Association With A Pair Of Top Quarks In The Lhc Run 2 Data With The Atlas Detector Using A Likelihood Technique written by Yulia Rodina and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Higgs Boson Decays To B Bb U00af With Associated T Quarks With The Atlas Detector At The Large Hadron Collider
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Author : Azzah Al-Shehri
language : en
Publisher:
Release Date : 2018
Higgs Boson Decays To B Bb U00af With Associated T Quarks With The Atlas Detector At The Large Hadron Collider written by Azzah Al-Shehri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Higgs bosons categories.
Search For The Higgs Boson Produced In Association With A Z Boson And Decaying To A Pair Of Bottom Quarks With The Atlas Experiment At Lhc
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Author : Lion Alio
language : en
Publisher:
Release Date : 2014
Search For The Higgs Boson Produced In Association With A Z Boson And Decaying To A Pair Of Bottom Quarks With The Atlas Experiment At Lhc written by Lion Alio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Search for the Higgs poson produced in association with a Z boson and decaying to a pair of b-quarks. This study is implemented with the ATLAS experience at LHC. This research includes the work on identification of b-jets in ATLAS detector, study of triggers of missing transverse energy and introduce a new trigger which is expected to gain more signal significance. The search for the Higgs boson is followed with the implementation of the new trigger and do the statistical analysis to estimate the significance gain in comparison with the analysis which use the nominal triggers.
Upgrade Of The Atlas Experiment Inner Tracker And Related Physics Perspectives Of The Higgs Boson Decay Into Two B Quarks
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Author : Audrey Ducourthial
language : en
Publisher:
Release Date : 2018
Upgrade Of The Atlas Experiment Inner Tracker And Related Physics Perspectives Of The Higgs Boson Decay Into Two B Quarks written by Audrey Ducourthial and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
By 2027, the LHC will enter its high luminosity regime, providing protons protons collisions at an unprecedented rate. The LHC experiments whill have to be upgraded to cope with this higher data rate. The new ATLAS Inner Tracker (ITk) will allow a better identification of b-quarks and interesting physics signature with b-quarks in the final states such as the Higgs trilinear coupling will be reachable. The work performed during this thesis consisted in testing planar pixel sensors for the ITk, as well as optimizing b-tagging algorithms. In parallel, a study on the radiation damage on silicon pixel sensors have been performed. The radiation hardness of silicon sensors plays a determinant role as it allows them to be efficient in the highly radiative environment at LHC. Understanding the impact of radiation in silicon sensors is a major challenge and a radiation damage digitizer which models radiation damage effects in ATLAS Monte Carlo simulations is currently developed by the ATLAS experiment. Three ITk silicon planar pixel sensors productions of LPNHE and FBK have been developed, produced and tested on beam. Sensors from these three productions aim to be part of the ITk and have to demonstrate good performance after being irradiated at high fluences. Several technological designs have been investigated, such as temporary metal biasing option and active edges which maximize the geometrical acceptance of the sensors. The optimization of b-tagging SV1 algorithm (a secondary-vertex based algorithm) will be pre- sented as well as a study on the extrapolation of b-tagging performances at high pT.
Search For Pair Production Of A New B Quark That Decays Into A Z Boson And A Bottom Quark With The Atlas Detector At The Lhc
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Author : Andre Milton Bach
language : en
Publisher:
Release Date : 2012
Search For Pair Production Of A New B Quark That Decays Into A Z Boson And A Bottom Quark With The Atlas Detector At The Lhc written by Andre Milton Bach and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
A search with the ATLAS detector for the pair production of a new b' quark in the Z boson plus b quark decay channel is reported. The pp collision data comprise 4.7 fb-1 of integrated luminosity at sqrt(s) = 7 TeV collected at the CERN Large Hadron Collider in 2011. This search complements recent searches for a b' decaying to a W boson and a top quark, and it is particularly important for new physics models containing vector-like quarks. From events containing both a Z boson reconstructed from electrons and a b tagged jet, any potential signal is enriched by selecting a subsample with large b' candidate pT. No evidence for a b' signal is found in this subsample; the invariant mass spectrum of the b' candidate agrees well with the Standard Model prediction. For the case of a b' that decays only to Z + b, masses mb'
Pair Production Of Higgs Bosons In The Final State With Bottom Quarks And Leptons In The Atlas Experiment
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Author :
language : en
Publisher:
Release Date : 2020
Pair Production Of Higgs Bosons In The Final State With Bottom Quarks And Leptons In The Atlas Experiment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Search For The Production Of The Higgs Boson Associated With A Pair Of Top Quarks With The Atlas Detector At The Lhc
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Author : Chao Wang
language : en
Publisher:
Release Date : 2017
Search For The Production Of The Higgs Boson Associated With A Pair Of Top Quarks With The Atlas Detector At The Lhc written by Chao Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
The production of the Higgs boson associated with a pair of top quarks is one of the most important Higgs boson production modes yet still not observed. Therefore, its discovery is one of the most challenging searches after the Higgs discovery: not only will it be the first time we can observe this Higgs production mode but also we will be able to measure its Yukawa coupling to the top quark. The measured results can answer the basic question of the Standard Model (SM) and can also search for any hints of new physics beyond the SM prediction. An analysis searching for the production of the Higgs boson associated with a pair of top quarks in three leptons final states is presented in this thesis. It is performed with the data collected by the ATLAS detector in 2015 and 2016 during the so-called « Run 2 » campaign corresponding to an integrated luminosity of 36.1 fb−1 at a center of mass energy of 13 TeV. It uses a boosted decision tree algorithm to discriminate between signal and background. The dominant background of fake leptons is estimated with the data-driven matrix method (Matrix Method). For a 125 GeV Standard Model Higgs boson, an excess of events over the expected background from other SM processes is found with an observed significance of 2.2 standard deviations, compared to an expectation of 1.5 standard deviations. The best fit for the ̄ttH production cross section is 1.5+0⋅8−0⋅7 times the SM expectation, consistent with the SM value of the Yukawa coupling to top quarks.