Measurement Of The Fiducial And Total Single Top Quark T Channel Production Cross Sections With The Atlas Detector At S
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Spin Correlations In Tt Events From Pp Collisions
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Author : Boris Lemmer
language : en
Publisher: Springer
Release Date : 2015-06-24
Spin Correlations In Tt Events From Pp Collisions written by Boris Lemmer and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-24 with Science categories.
This thesis introduces readers to the Standard Model, the top quark and its properties, before explaining the concept of spin correlation measurement. The first measurement of top quark spin correlations at the LHC in the lepton+jets decay channel is presented. As the heaviest elementary particle, the top quark plays an essential role in the Standard Model of elementary particle physics. In the case of top quarks being produced in pairs at hadron colliders, the Standard Model predicts their spins to be correlated. The degree of correlation depends on both the production mechanism and properties of the top quark. Any deviation from the Standard Model prediction can be an indicator for new physics phenomena. The thesis employs an advanced top quark reconstruction algorithm including dedicated identification of the up- and down-type quarks from the W boson decay.
Measurement Of The Fiducial And Total Single Top Quark T Channel Production Cross Sections With The Atlas Detector At S
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Author : Phillipp Tepel
language : en
Publisher:
Release Date : 2018
Measurement Of The Fiducial And Total Single Top Quark T Channel Production Cross Sections With The Atlas Detector At S written by Phillipp Tepel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Fermions categories.
Lepton Photon Interactions At High Energies Lepton Photon 2017 Proceedings Of The 28th International Symposium
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Author : Wei Wang
language : en
Publisher: World Scientific
Release Date : 2020-02-27
Lepton Photon Interactions At High Energies Lepton Photon 2017 Proceedings Of The 28th International Symposium written by Wei Wang and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-02-27 with Science categories.
The latest of the 'Lepton Photon' symposium, one of the well-established series of meetings in the high-energy physics community, was successfully organized at the South Campus of Sun Yat-sen University, Guangzhou, China, from August 7-12, 2017, where physicists around the world gathered to discuss the latest advancements in the research field.This proceedings volume of the Lepton Photon 2017 collects contributions by the plenary session speakers and the posters' presenters, which cover the latest results in particle physics, nuclear physics, astrophysics, cosmology, and plans for future facilities.
Searches For Supersymmetric Particles In Final States With Multiple Top And Bottom Quarks With The Atlas Detector
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Author : Chiara Rizzi
language : en
Publisher: Springer Nature
Release Date : 2020-09-01
Searches For Supersymmetric Particles In Final States With Multiple Top And Bottom Quarks With The Atlas Detector written by Chiara Rizzi and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-01 with Science categories.
This PhD thesis documents two of the highest-profile searches for supersymmetry performed at the ATLAS experiment using up to 80/fb of proton-proton collision data at a center-of-mass energy of 13 TeV delivered by the Large Hadron Collider (LHC) during its Run 2 (2015-2018). The signals of interest feature a high multiplicity of jets originating from the hadronisation of b-quarks and large missing transverse momentum, which constitutes one of the most promising final state signatures for discovery of new phenomena at the LHC. The first search is focused on the strong production of a pair of gluinos, with each gluino decaying into a neutralino and a top-antitop-quark pair or a bottom-antibottom-quark pair. The second search targets the pair production of higgsinos, with each higgsino decaying into a gravitino and a Higgs boson, which in turn is required to decay into a bottom-antibottom-quark pair. Both searches employ state-of-the-art experimental techniques and analysis strategies at the LHC, resulting in some of the most restrictive bounds available to date on the masses of the gluino,neutralino, and higgsino in the context of the models explored.
Proceedings Of The Xxiv Dae Brns High Energy Physics Symposium Jatni India
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Author : Bedangadas Mohanty
language : en
Publisher: Springer Nature
Release Date : 2022-10-05
Proceedings Of The Xxiv Dae Brns High Energy Physics Symposium Jatni India written by Bedangadas Mohanty and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-10-05 with Science categories.
This book presents proceedings from the XXIV DAE-BRNS High Energy Physics (HEP) Symposium 2020, held at the National Institute of Science Education and Research, Jatni, Odisha, India. The contributions cover a variety of topics in particle physics, astroparticle physics, cosmology and related areas from both experimental and theoretical perspectives, namely (1) Standard Model Physics, (2) Beyond Standard Model Physics, (3) Relativistic Heavy-Ion Physics & QCD, (4) Neutrino Physics, (5) Particle Astrophysics & Cosmology, (6) Detector Development Future Facilities and Experiments, (7) Formal Theory, (8) Societal Applications: Medical Physics, Imaging, etc.
Measurement Of Higgs Boson Production Cross Sections In The Diphoton Channel
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Author : Ahmed Tarek Abouelfadl Mohamed
language : en
Publisher: Springer Nature
Release Date : 2020-11-12
Measurement Of Higgs Boson Production Cross Sections In The Diphoton Channel written by Ahmed Tarek Abouelfadl Mohamed and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-12 with Science categories.
This thesis presents the measurement of the Higgs boson cross section in the diphoton decay channel. The measurement relies on proton-proton collision data at a center-of-mass energy √s = 13 TeV recorded by the ATLAS experiment at the Large Hadron Collider (LHC). The collected data correspond to the full Run-2 dataset with an integrated luminosity of 139 fb-1. The measured cross sections are used to constrain anomalous Higgs boson interactions in the Effective Field Theory (EFT) framework. The results presented in this thesis represent a reduction by a factor 2 of the different photon and jet energy scale and resolution systematic uncertainties with respect to the previous ATLAS publication. The thesis details the calibration of electron and photon energies in ATLAS, in particular the measurement of the presampler energy scale and the estimation of its systematic uncertainty. This calibration was used to perform a measurement of the Higgs boson mass in the H → γγ and H → 4l channels using the 36 fb−1 dataset.
Particle And Astroparticle Physics Gravitation And Cosmology Predictions Observations And New Projects Proceedings Of The Xxx Th International Workshop On High Energy Physics
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Author : Roman Anatolievich Ryutin
language : en
Publisher: World Scientific
Release Date : 2015-06-16
Particle And Astroparticle Physics Gravitation And Cosmology Predictions Observations And New Projects Proceedings Of The Xxx Th International Workshop On High Energy Physics written by Roman Anatolievich Ryutin and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-16 with Science categories.
This unique volume captures the content of the XXXth International Workshop on High Energy Physics. The scope of this volume is much wider than just high-energy physics; it actually concerns and includes materials from all the most fundamental areas of modern physics research: high-energy physics proper, gravitation and cosmology. Presentations embrace both theory and experiment.
Measurement Of The T Channel Single Top Quark Production Cross Section With The Atlas Detector At S
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Author : Philipp Sturm
language : en
Publisher:
Release Date : 2012
Measurement Of The T Channel Single Top Quark Production Cross Section With The Atlas Detector At S written by Philipp Sturm 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.
Fiducial Cross Section Measurements Of The Production Of A Prompt Photon In Association With A Top Quark Pair At S
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Author : Joshua Wyatt Smith
language : en
Publisher:
Release Date : 2018
Fiducial Cross Section Measurements Of The Production Of A Prompt Photon In Association With A Top Quark Pair At S written by Joshua Wyatt Smith 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.
The cross sections for top-quark pair production in association with a photon are measured in a fiducial volume with the ATLAS detector at a centre-of-mass energy of 13 TeV. Results are presented using proton-proton collision data collected by the LHC during 2015 and 2016, amounting to a total of 36.1 fb$^{-1}$. This also presents the first $t\bar{t}\gamma$ cross-section measurements performed in the dilepton channels. Exactly one photon is required to have $p_{\text{T}} > 20$ GeV and be isolated based on track and calorimeter information. At least two (four) jets are required in the dilept...
Measurement Of The T Channel Single Top Quark Production Cross Section With The Atlas Detector At S
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Author : Philipp Sturm
language : en
Publisher:
Release Date : 2012
Measurement Of The T Channel Single Top Quark Production Cross Section With The Atlas Detector At S written by Philipp Sturm 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.