Study of the ATLAS Tile-Cal Performance

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Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (919 download)

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Book Synopsis Study of the ATLAS Tile-Cal Performance by : Universitat de València. Facultat de Ciències Físiques

Download or read book Study of the ATLAS Tile-Cal Performance written by Universitat de València. Facultat de Ciències Físiques and published by . This book was released on 2002 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

ATLAS Inner Detector Performance and Alignment Studies

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Publisher :
ISBN 13 :
Total Pages : 336 pages
Book Rating : 4.:/5 (112 download)

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Book Synopsis ATLAS Inner Detector Performance and Alignment Studies by : Sergio González Sevilla

Download or read book ATLAS Inner Detector Performance and Alignment Studies written by Sergio González Sevilla and published by . This book was released on 2006 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Performance of the ATLAS Silicon Tracker and Search for New Gauge Bosons in the Little Higgs Models

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Publisher :
ISBN 13 :
Total Pages : 163 pages
Book Rating : 4.:/5 (919 download)

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Book Synopsis Performance of the ATLAS Silicon Tracker and Search for New Gauge Bosons in the Little Higgs Models by : Universitat de València. Facultat de Ciències Físiques

Download or read book Performance of the ATLAS Silicon Tracker and Search for New Gauge Bosons in the Little Higgs Models written by Universitat de València. Facultat de Ciències Físiques and published by . This book was released on 2004 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Physics with Photons Using the ATLAS Run 2 Data

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Publisher : Springer
ISBN 13 : 3030243702
Total Pages : 265 pages
Book Rating : 4.0/5 (32 download)

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Book Synopsis Physics with Photons Using the ATLAS Run 2 Data by : Stefano Manzoni

Download or read book Physics with Photons Using the ATLAS Run 2 Data written by Stefano Manzoni and published by Springer. This book was released on 2019-08-02 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work presented in this book is based on the proton-proton collision data from the Large Hadron Collider at a centre-of-mass energy of 13 TeV recorded by the ATLAS detector in 2015 and 2016. The research program of the ATLAS experiment includes the precise measurement of the parameters of the Standard Model, and the search for signals of physics beyond the SM. Both these approaches are pursued in this thesis, which presents two different analyses: the measurement of the Higgs boson mass in the di-photon decay channel, and the search for production of supersymmetric particles (gluinos, squarks or winos) in a final state containing two photons and missing transverse momentum. Finally, ATLAS detector performance studies, which are key ingredients for the two analyses outlined before, are also carried out and described.

Atlas of Atomic Nuclear Structures [electronic Resource]

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ISBN 13 : 9780973051513
Total Pages : pages
Book Rating : 4.0/5 (515 download)

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Book Synopsis Atlas of Atomic Nuclear Structures [electronic Resource] by : S. Sarg

Download or read book Atlas of Atomic Nuclear Structures [electronic Resource] written by S. Sarg and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Search for Dark Matter with ATLAS

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Publisher : Springer
ISBN 13 : 3319410458
Total Pages : 325 pages
Book Rating : 4.3/5 (194 download)

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Book Synopsis Search for Dark Matter with ATLAS by : Ruth Pöttgen

Download or read book Search for Dark Matter with ATLAS written by Ruth Pöttgen and published by Springer. This book was released on 2016-06-29 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes in detail a search for weakly interacting massive particles as possible dark matter candidates, making use of so-called mono-jet events. It includes a detailed description of the run-1 system, important operational challenges, and the upgrade for run-2. The nature of dark matter, which accounts for roughly 25% of the energy-matter content of the universe, is one of the biggest open questions in fundamental science. The analysis is based on the full set of proton-proton collisions collected by the ATLAS experiment at the Large Hadron Collider at √s = 8 TeV. Special attention is given to the experimental challenges and analysis techniques, as well as the overall scientific context beyond particle physics. The results complement those of non-collider experiments and yield some of the strongest exclusion bounds on parameters of dark matter models by the end of the Large Hadron Collider run-1. Details of the upgrade of the ATLAS Central Trigger for run-2 are also included.

Searching for Dark Matter with the ATLAS Detector

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Publisher : Springer
ISBN 13 : 3319444530
Total Pages : 341 pages
Book Rating : 4.3/5 (194 download)

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Book Synopsis Searching for Dark Matter with the ATLAS Detector by : Steven Schramm

Download or read book Searching for Dark Matter with the ATLAS Detector written by Steven Schramm and published by Springer. This book was released on 2016-11-23 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the search for Dark Matter at the LHC in the mono-jet plus missing transverse momentum final state, using the full dataset recorded in 2012 by the ATLAS Experiment. It is the first time that the number of jets is not explicitly restricted to one or two, thus increasing the sensitivity to new signals. Instead, a balance between the most energetic jet and the missing transverse momentum is required, thus selecting mono-jet-like final states. Collider searches for Dark Matter have typically used signal models employing effective field theories (EFTs), even when comparing to results from direct and indirect detection experiments, where the difference in energy scale renders many such comparisons invalid. The thesis features the first robust and comprehensive treatment of the validity of EFTs in collider searches, and provides a means by which the different classifications of Dark Matter experiments can be compared on a sound and fair basis.

Measurement of the Inclusive Electron Cross-Section from Heavy-Flavour Decays and Search for Compressed Supersymmetric Scenarios with the ATLAS Experiment

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Publisher : Springer
ISBN 13 : 331907136X
Total Pages : 268 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Measurement of the Inclusive Electron Cross-Section from Heavy-Flavour Decays and Search for Compressed Supersymmetric Scenarios with the ATLAS Experiment by : Moritz Backes

Download or read book Measurement of the Inclusive Electron Cross-Section from Heavy-Flavour Decays and Search for Compressed Supersymmetric Scenarios with the ATLAS Experiment written by Moritz Backes and published by Springer. This book was released on 2014-06-11 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first part of this thesis presents the measurement of the inclusive cross-section for electron production from heavy-flavour decays in the electron transverse momentum range 7 GeV

Olicognografia

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Publisher : Lulu.com
ISBN 13 : 1291192239
Total Pages : 285 pages
Book Rating : 4.2/5 (911 download)

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Book Synopsis Olicognografia by : Olivier T. Godichet

Download or read book Olicognografia written by Olivier T. Godichet and published by Lulu.com. This book was released on 2012-11-14 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oli: para oligo, en cada niveles algunas opciones de palabras claves, sobre algunos niveles Cogno: para conocimiento, articulacion de conceptos claves, para integrar democraticamente y en grupos operativos Grafia: para une dibujo de grafos geometricamente logicos. En total, un marco logico para caracterizar situaciones teoricas y aplicadas. Por le tanto una metodologia, aplicada para aprender en estructurar marcos logicos integros. 50 ejemplos de aplicacion en muchos registros de ciencias desde la filosofia hasta las ciencias sociales; epistemologias cuya filosofia de diseño se presta al manejo democratico de programas compartidos.

Physics with Electrons in the ATLAS Detector

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Publisher : Springer
ISBN 13 : 3319739301
Total Pages : 261 pages
Book Rating : 4.3/5 (197 download)

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Book Synopsis Physics with Electrons in the ATLAS Detector by : Kurt Brendlinger

Download or read book Physics with Electrons in the ATLAS Detector written by Kurt Brendlinger and published by Springer. This book was released on 2018-01-30 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents two production cross-section measurements of pairs of massive bosons using final states with leptons, made with the ATLAS detector at the Large Hadron Collider. The first measurement, performed using data collected in 2012 at center-of-mass energy √ s = 8 TeV, is the first fiducial and differential cross-section measurement of the production of the Higgs Boson when it decays to four charged leptons (electrons or muons). The second measurement is the first fiducial and inclusive production cross-section measurement of WZ pairs at center-of-mass energy √ s = 13 TeV using final states with three charged leptons. A significant portion of the thesis focuses on the methods used to identify electrons from massive boson decay—important for many flagship measurements—and on assessing the efficiency of these particle identification techniques. The chapter discussing the WZ pair cross-section measurement provides a detailed example of an estimate of lepton background in the context of an analysis with three leptons in the final state.

Measurement of the Inclusive Jet Cross Section with the ATLAS Detector at the Large Hadron Collider

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Publisher : Springer Science & Business Media
ISBN 13 : 3642305385
Total Pages : 167 pages
Book Rating : 4.6/5 (423 download)

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Book Synopsis Measurement of the Inclusive Jet Cross Section with the ATLAS Detector at the Large Hadron Collider by : Caterina Doglioni

Download or read book Measurement of the Inclusive Jet Cross Section with the ATLAS Detector at the Large Hadron Collider written by Caterina Doglioni and published by Springer Science & Business Media. This book was released on 2012-07-28 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tests of the current understanding of physics at the highest energies achievable in man-made experiments are performed at CERN’s Large Hadron Collider. In the theory of the strong force within the Standard Model of particle physics - Quantum ChromoDynamics or QCD - confined quarks and gluons from the proton-proton scattering manifest themselves as groups of collimated particles. These particles are clustered into physically measurable objects called hadronic jets. As jets are widely produced at hadron colliders, they are the key physics objects for an early "rediscovery of QCD". This thesis presents the first jet measurement from the ATLAS Collaboration at the LHC and confronts the experimental challenges of precision measurements. Inclusive jet cross section data are then used to improve the knowledge of the momentum distribution of quarks and gluons within the proton and of the magnitude of the strong force.

Searches for Supersymmetric Particles in Final States with Multiple Top and Bottom Quarks with the Atlas Detector

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Publisher : Springer Nature
ISBN 13 : 3030528774
Total Pages : 279 pages
Book Rating : 4.0/5 (35 download)

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Book Synopsis Searches for Supersymmetric Particles in Final States with Multiple Top and Bottom Quarks with the Atlas Detector by : Chiara Rizzi

Download or read book Searches for Supersymmetric Particles in Final States with Multiple Top and Bottom Quarks with the Atlas Detector written by Chiara Rizzi and published by Springer Nature. This book was released on 2020-09-01 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

The Performance of the ATLAS Detector

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Publisher : Springer
ISBN 13 : 9783642445439
Total Pages : 0 pages
Book Rating : 4.4/5 (454 download)

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Book Synopsis The Performance of the ATLAS Detector by : ATLAS Collaboration

Download or read book The Performance of the ATLAS Detector written by ATLAS Collaboration and published by Springer. This book was released on 2014-10-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ATLAS detector at the CERN Large Hadron Collider is an apparatus of unprecedented complexity, designed to probe physics in proton-proton collisions at centre-of-mass energies up to 14 TeV. It was installed in its underground cavern at the LHC during the period 2004 to 2008. Testing of individual subsystems began immediately with calibration systems and cosmic rays, and by 2008 full detector systems could be operated with the planned infrastructure, readout, and monitoring systems. Several commissioning runs of the full detector were organized in 2008 and 2009. During these runs the detector was operated continuously for several months with its readout triggered by cosmic ray muons. At the same time, regular calibrations of individual detector systems were made. In the course of these runs, signals from tens of millions of cosmic ray events were recorded. These commissioning runs continued until the first beam-beam collisions in late 2009. This volume is a collection of seven performance papers based on data collected during this commissioning period. Five papers deal with the response of individual detector systems. One paper describes the performance of the simulation infrastructure used to model the detector’s response to both cosmic rays and to the later beam-beam collisions. The final paper describes measurements drawing on the integrated performance of several detector systems. It studies lepton identification, the response to low energy electrons, muon energy loss in the calorimeters, missing ET effects, and the combined performance for muons when both the muon spectrometer and the inner tracking detector are used. These papers summarize the studies of the ATLAS detector performance and readiness prior to the start of colliding beam data. They are reprinted from The European Physical Journal C where they were published between summer 2010 and spring 2011.

ATLAS Measurements of the Higgs Boson Coupling to the Top Quark in the Higgs to Diphoton Decay Channel

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Publisher : Springer Nature
ISBN 13 : 3030863689
Total Pages : 233 pages
Book Rating : 4.0/5 (38 download)

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Book Synopsis ATLAS Measurements of the Higgs Boson Coupling to the Top Quark in the Higgs to Diphoton Decay Channel by : Jennet Elizabeth Dickinson

Download or read book ATLAS Measurements of the Higgs Boson Coupling to the Top Quark in the Higgs to Diphoton Decay Channel written by Jennet Elizabeth Dickinson and published by Springer Nature. This book was released on 2021-11-16 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: During Run 2 of the Large Hadron Collider, the ATLAS experiment recorded proton-proton collision events at 13 TeV, the highest energy ever achieved in a collider. Analysis of this dataset has provided new opportunities for precision measurements of the Higgs boson, including its interaction with the top quark. The Higgs-top coupling can be directly probed through the production of a Higgs boson in association with a top-antitop quark pair (ttH). The Higgs to diphoton decay channel is among the most sensitive for ttH measurements due to the excellent diphoton mass resolution of the ATLAS detector and the clean signature of this decay. Event selection criteria were developed using novel Machine Learning techniques to target ttH events, yielding a precise measurement of the ttH cross section in the diphoton channel and a 6.3 $\sigma$ observation of the ttH process in combination with other decay channels, as well as stringent limits on CP violation in the Higgs-top coupling.

Atlas of Point Contact Spectra of Electron-Phonon Interactions in Metals

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Publisher : Springer Science & Business Media
ISBN 13 : 146152265X
Total Pages : 162 pages
Book Rating : 4.4/5 (615 download)

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Book Synopsis Atlas of Point Contact Spectra of Electron-Phonon Interactions in Metals by : A.V. Khotkevich

Download or read book Atlas of Point Contact Spectra of Electron-Phonon Interactions in Metals written by A.V. Khotkevich and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The characteristics of electrical contacts have long attracted the attention of researchers since these contacts are used in every electrical and electronic device. Earlier studies generally considered electrical contacts of large dimensions, having regions of current concentration with diameters substantially larger than the characteristic dimensions of the material: the interatomic distance, the mean free path for electrons, the coherence length in the superconducting state, etc. [110]. The development of microelectronics presented to scientists and engineers the task of studying the characteristics of electrical contacts with ultra-small dimensions. Characteristics of point contacts such as mechanical stability under continuous current loads, the magnitudes of electrical fluctuations, inherent sensitivity in radio devices and nonlinear characteristics in connection with electromagnetic radiation can not be understood and altered in the required way without knowledge of the physical processes occurring in contacts. Until recently it was thought that the electrical conductivity of contacts with direct conductance (without tunneling or semiconducting barriers) obeyed Ohm's law. Nonlinearities of the current-voltage characteristics were explained by joule heating of the metal in the region of the contact. However, studies of the current-voltage characteristics of metallic point contacts at low (liquid helium) temperatures [142] showed that heating effects were negligible in many cases and the nonlinear characteristics under these conditions were observed to take the form of the energy dependent probability of inelastic electron scattering, induced by various mechanisms.

Standard Model Measurements with the ATLAS Detector

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Publisher : Springer Science & Business Media
ISBN 13 : 3319008102
Total Pages : 100 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Standard Model Measurements with the ATLAS Detector by : Jana Nováková

Download or read book Standard Model Measurements with the ATLAS Detector written by Jana Nováková and published by Springer Science & Business Media. This book was released on 2013-08-30 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis deals with two main procedures performed with the ATLAS detector at the Large Hadron Collider (LHC). The noise description in the hadronic calorimeter TileCal represents a very valuable technical job. The second part presents a fruitful physics analysis - the cross section measurement of the process p+p → Z0 → τ + τ. The Monte Carlo simulations of the TileCal are described in the first part of the thesis, including a detailed treatment of the electronic noise and multiple interactions (so-called pile-up). An accurate description of both is crucial for the reconstruction of e.g. jets or hadronic tau-jets. The second part reports a Standard Model measurement of the Z0 → τ + τ process with the emphasis on the final state with an electron and a hadronically decaying tau-lepton. The Z0 → τ + τ channel forms the dominant background in the search for Higgs bosons decaying into tau lepton pairs, and thus the good understanding achieved here can facilitate more sensitive Higgs detection.

Search for New Phenomena in Top-Antitop Quarks Final States with Additional Heavy-Flavour Jets with the ATLAS Detector

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Publisher : Springer Nature
ISBN 13 : 9811509328
Total Pages : 279 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis Search for New Phenomena in Top-Antitop Quarks Final States with Additional Heavy-Flavour Jets with the ATLAS Detector by : Daiki Yamaguchi

Download or read book Search for New Phenomena in Top-Antitop Quarks Final States with Additional Heavy-Flavour Jets with the ATLAS Detector written by Daiki Yamaguchi and published by Springer Nature. This book was released on 2019-10-30 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on the search for a new heavy particle, the Vector-Like Top quark (VLT), in the Large Hadron Collider (LHC) at CERN. The signal process is the pair production of VLT decaying into a Higgs boson and top quark (TT→Ht+X, X=Ht, Wb, Zt). The signal events result in top–antitop quarks final states with additional heavy flavour jets. The book summarises the analysis of the data collected with the ATLAS detector in 2015 and 2016. In order to better differentiate between signals and backgrounds, exclusive taggers of top quark and Higgs boson were developed and optimised for VLT signals. These efforts improved the sensitivity by roughly 30%, compared to the previous analysis. The analysis outcomes yield the strongest constraints on parameter space in various BSM theoretical models. In addition, the book addresses detector operation and the evaluation of tracking performance. These efforts are essential to properly collecting dense events and improving the accuracy of the reconstructed objects that are used for particle identification. As such, they represent a valuable contribution to data analysis in extremely dense environments.