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Identifying Hadronic Tau Decays Using Calorimeter Topological Clusters At Atlas
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Book Synopsis Identifying Hadronic Tau Decays Using Calorimeter Topological Clusters at ATLAS by : Michel Trottier-McDonald
Download or read book Identifying Hadronic Tau Decays Using Calorimeter Topological Clusters at ATLAS written by Michel Trottier-McDonald and published by . This book was released on 2010 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ATLAS experiment collects data on the world's highest energy proton-proton collisions. Its primary goals are to search for direct evidence of physics beyond the Standard Model of particle physics, and to provide a final verdict on the existence of the Standard Model Higgs boson. A robust tau identification procedure is an important ingredient in the search for Standard Model and supersymmetric Higgs bosons. In this study, new tau identification variables based on calorimeter topological clusters are investigated. These variables complement existing calorimeter-based variables by bringing additional discriminating power against hadronic jets. They have a straightforward physics interpretation which allows them to be calculated at particle-level. Some of these new variables are shown to be robust against background noise from the underlying event and in-time pileup, two effects which negatively impact tau identification. Several of these new variables are now part of the official tau reconstruction software at ATLAS.
Book Synopsis Identification of Hadronic Tau Decays in ATLAS. by :
Download or read book Identification of Hadronic Tau Decays in ATLAS. written by and published by . This book was released on 1998 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taus can be an important signature for Supersymmetry at the LHC. They can be produced copiously in the decays of supersymmetric particles. Measurement of their momentum and of the tau-tau invariant mass distribution, would provide detailed information regarding the masses of supersymmetric particles. It is demonstrated using full simulation that it will be possible for ATLAS to make a cut on the reconstructed tau invariant mass using information from the tracking and the electromagnetic calorimeter. The measured energy and momentum of tau's that pass this selection can then be used to infer information about the tau-tau invariant mass.
Book Synopsis Identification of Hadronic Tau Decays Using the Tau Lepton Flight Path and Reconstruction and Identification of Jets with a Low Transverse Energy at Intermediate Luminosities with an Application to the Search for the Higgs Boson in Vector Boson Fusion with the ATLAS Experiment at the LHC by : Christoph Ruwiedel
Download or read book Identification of Hadronic Tau Decays Using the Tau Lepton Flight Path and Reconstruction and Identification of Jets with a Low Transverse Energy at Intermediate Luminosities with an Application to the Search for the Higgs Boson in Vector Boson Fusion with the ATLAS Experiment at the LHC written by Christoph Ruwiedel and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Identification of Hadronic Tau Decays and Observation Potential of CP-violating Effects in SUSY at ATLAS by : Björn Gosdzik
Download or read book Identification of Hadronic Tau Decays and Observation Potential of CP-violating Effects in SUSY at ATLAS written by Björn Gosdzik and published by . This book was released on 2011 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tau Trigger at the ATLAS Experiment by :
Download or read book Tau Trigger at the ATLAS Experiment written by and published by . This book was released on 2011 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many theoretical models, like the Standard Model or SUSY at large tan([beta]), predict Higgs bosons or new particles which decay more abundantly to final states including tau leptons than to other leptons. At the energy scale of the LHC, the identification of tau leptons, in particular in the hadronic decay mode, will be a challenging task due to an overwhelming QCD background which gives rise to jets of particles that can be hard to distinguish from hadronic tau decays. Equipped with excellent tracking and calorimetry, the ATLAS experiment has developed tau identification tools capable of working at the trigger level. This contribution presents tau trigger algorithms which exploit the main features of hadronic tau decays and describes the current tau trigger commissioning activities. Many of the SM processes being investigated at ATLAS, as well as numerous BSM searches, contain tau leptons in their final states. Being able to trigger effectively on the tau leptons in these events will contribute to the success of the ATLAS experiment. The tau trigger algorithms and monitoring infrastructure are ready for the first data, and are being tested with the data collected with cosmic muons. The development of efficiency measurements methods using QCD and Z → [tau][tau] events is well advanced.
Book Synopsis Identification of Hadronic Τ [tau] Decays and Observation Potential of CP-violating Effects in SUSY and ATLAS by : Björn Gosdzik
Download or read book Identification of Hadronic Τ [tau] Decays and Observation Potential of CP-violating Effects in SUSY and ATLAS written by Björn Gosdzik and published by . This book was released on 2011 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Identification of Hadronic _t63 [tau] Decays and Observation Potential of CP-violating Effects in SUSY and ATLAS by : Björn Gosdzik
Download or read book Identification of Hadronic _t63 [tau] Decays and Observation Potential of CP-violating Effects in SUSY and ATLAS written by Björn Gosdzik and published by . This book was released on 2011 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Expected Performance of the ATLAS Experiment by :
Download or read book Expected Performance of the ATLAS Experiment written by and published by . This book was released on 2009 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for New Physics in High-mass Ditau Events in the ATLAS Detector by : Ryan Reece
Download or read book A Search for New Physics in High-mass Ditau Events in the ATLAS Detector written by Ryan Reece and published by . This book was released on 2013 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Identification of Hadronic Τ [tau] Decays Using the Τ [tau] Lepton Flight Path and Reconstruction and Identification of Jets with a Low Transverse Energy at Intermediate Luminosities with an Application to the Search for the Higgs Boson in Vector Boson Fusion with the ATLAS Experiment at the LHC by : Christoph Ruwiedel
Download or read book Identification of Hadronic Τ [tau] Decays Using the Τ [tau] Lepton Flight Path and Reconstruction and Identification of Jets with a Low Transverse Energy at Intermediate Luminosities with an Application to the Search for the Higgs Boson in Vector Boson Fusion with the ATLAS Experiment at the LHC written by Christoph Ruwiedel and published by . This book was released on 2010 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reconstruction of Hadronic Decay Products of Tau Leptons with the ATLAS Experiment by :
Download or read book Reconstruction of Hadronic Decay Products of Tau Leptons with the ATLAS Experiment written by and published by . This book was released on 2016 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document presents a new method of reconstructing the individual charged and neutral hadrons in tau decays with the ATLAS detector. The reconstructed hadrons are used to classify the decay mode and to calculate the visible four-momentum of reconstructed tau candidates, significantly improving the resolution with respect to the calibration in the existing tau reconstruction. The performance of the reconstruction algorithm is optimised and evaluated using simulation and validated using samples of Z → [tau][tau] and Z(→ [mu][mu])+jets events selected from proton-proton collisions at a centre-of-mass energy √s = 8 TeV, corresponding to an integrated luminosity of 5 fb-1.
Book Synopsis Identification of Hadronic _t63 [tau] Decays Using the _t63 [tau] Lepton Flight Path and Reconstruction and Identification of Jets with a Low Transverse Energy at Intermediate Luminosities with an Application to the Search for the Higgs Boson in Vector Boson Fusion with the ATLAS Experiment at the LHC by : Christoph Ruwiedel
Download or read book Identification of Hadronic _t63 [tau] Decays Using the _t63 [tau] Lepton Flight Path and Reconstruction and Identification of Jets with a Low Transverse Energy at Intermediate Luminosities with an Application to the Search for the Higgs Boson in Vector Boson Fusion with the ATLAS Experiment at the LHC written by Christoph Ruwiedel and published by . This book was released on 2010 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Identification of Hadronic Tau Lepton Decays Using a Deep Neural Network by : Armen Tumasyan
Download or read book Identification of Hadronic Tau Lepton Decays Using a Deep Neural Network written by Armen Tumasyan and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Particle Physics Reference Library by : Christian W. Fabjan
Download or read book Particle Physics Reference Library written by Christian W. Fabjan and published by Springer Nature. This book was released on 2020 with total page 1083 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second open access volume of the handbook series deals with detectors, large experimental facilities and data handling, both for accelerator and non-accelerator based experiments. It also covers applications in medicine and life sciences. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Book Synopsis A Search for Displaced Leptons in the ATLAS Detector by : Lesya Horyn
Download or read book A Search for Displaced Leptons in the ATLAS Detector written by Lesya Horyn and published by Springer Nature. This book was released on 2022-02-07 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a search for long-lived particles decaying into displaced electrons and/or muons with large impact parameters. This signature provides unique sensitivity to the production of theoretical lepton-partners, sleptons. These particles are a feature of supersymmetric theories, which seek to address unanswered questions in nature. The signature searched for in this thesis is difficult to identify, and in fact, this is the first time it has been probed at the Large Hadron Collider (LHC). It covers a long-standing gap in coverage of possible new physics signatures. This thesis describes the special reconstruction and identification algorithms used to select leptons with large impact parameters and the details of the background estimation. The results are consistent with background, so limits on slepton masses and lifetimes in this model are calculated at 95% CL, drastically improving on the previous best limits from the Large Electron Positron Collider (LEP).
Book Synopsis Astroparticle, Particle, Space Physics and Detectors for Physics Applications by : S. Giani
Download or read book Astroparticle, Particle, Space Physics and Detectors for Physics Applications written by S. Giani and published by World Scientific. This book was released on 2012 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exploration of the subnuclear world is done through increasingly complex experiments covering a wide range of energy and performed in a large variety of environments ranging from particle accelerators, underground detectors to satellites and the space laboratory. Among recent advances one has to indicate, for instance, first results obtained from space and LHC experiments and progress done in preparation of the latter experiments upgrades, including plans for the LHC machine upgrade. The achievement of these research programs calls for novel techniques, new materials and instrumentation to be used in detectors, often of large scale. Therefore, fundamental physics is at the forefront of technological advance and also leads to many applications. Among these, medical applications have a particular importance due to health and social benefits they bring to the public. Sample Chapter(s). Science highlights from the Fenni Observatory (5,046 KB). Contents: Space Experiments and Cosmic Rays Observations; Production and Propagation of Cosmic Rays in the Galaxy and Heliosphere; Dark Matter Searches, Underwater and Underground Experiments; High Energy Physics Experiments; Tracker and Position Sensitive Detectors; Calorimetry; Advanced Detectors, Particles Identication, Devices and Materials in Radiation; Broader Impact Activities, Treatments and Software Application. Readership: Post-graduate students, researchers and engineers.
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