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Search For Resonant Wz Production In The Fully Leptonic Final State At 13 Tev With The Cms Detector
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Book Synopsis Search for Resonant WZ Production in the Fully Leptonic Final State at 13 TeV with the CMS Detector by : Andres M. Vargas Hernandez
Download or read book Search for Resonant WZ Production in the Fully Leptonic Final State at 13 TeV with the CMS Detector written by Andres M. Vargas Hernandez and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for an electrically charged, narrow-width diboson (WZ) resonance in the fully leptonic final state using 137.65 fb^-1 of data collected by the CMS experiment during the 2016-2018 run period, at the LHC and a center of mass energy of13 TeV is presented. The search focuses on a channel where the resonance decays to a pair of standard model vector bosons: W and Z. The Z boson subsequently decays to a pair of leptons, either electrons (e) or muons (Îơ). While the W boson decays to a lepton and a neutrino (Îư). As Îư escapes undetected, the neutrino is reconstructed from the missing transverse momentum of the event. The analysis is based on a bump-hunt search strategy with background estimation based on stochastically generated simulation events. No significant excess of events is observed above the expected background from the Standard Model and limits are set on the production cross-section of the diboson resonance as a function of the resonance mass at 95% confidence level. Results are interpreted in the context of the Heavy Vector Triplet (HVT) framework.
Book Synopsis Search for Resonant WZ Production in the Fully Leptonic Final State with the ATLAS Detector by : Benjamin Freund
Download or read book Search for Resonant WZ Production in the Fully Leptonic Final State with the ATLAS Detector written by Benjamin Freund and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Phenomena Beyond the Standard Model: What Do We Expect for New Physics to Look Like? by : Roman Pasechnik
Download or read book Phenomena Beyond the Standard Model: What Do We Expect for New Physics to Look Like? written by Roman Pasechnik and published by Frontiers Media SA. This book was released on 2020-09-03 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Book Synopsis Advances in Jet Substructure at the LHC by : Roman Kogler
Download or read book Advances in Jet Substructure at the LHC written by Roman Kogler and published by Springer Nature. This book was released on 2021-05-10 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the reader to the field of jet substructure, starting from the basic considerations for capturing decays of boosted particles in individual jets, to explaining state-of-the-art techniques. Jet substructure methods have become ubiquitous in data analyses at the LHC, with diverse applications stemming from the abundance of jets in proton-proton collisions, the presence of pileup and multiple interactions, and the need to reconstruct and identify decays of highly-Lorentz boosted particles. The last decade has seen a vast increase in our knowledge of all aspects of the field, with a proliferation of new jet substructure algorithms, calculations and measurements which are presented in this book. Recent developments and algorithms are described and put into the larger experimental context. Their usefulness and application are shown in many demonstrative examples and the phenomenological and experimental effects influencing their performance are discussed. A comprehensive overview is given of measurements and searches for new phenomena performed by the ATLAS and CMS Collaborations. This book shows the impressive versatility of jet substructure methods at the LHC.
Book Synopsis Search for WZ Resonances in the Fully Leptonic Channel Using Pp Collisions at {u221A}s by :
Download or read book Search for WZ Resonances in the Fully Leptonic Channel Using Pp Collisions at {u221A}s written by and published by . This book was released on 2014 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for resonant WZ production in the l?l'l' (l,l'=e,?) decay channel using 20.3 fb-1 of √s = 8 TeV pp collision data collected by the ATLAS experiment at LHC is presented. No significant deviation from the Standard Model prediction is observed and upper limits on the production cross sections of WZ resonances from an extended gauge model W' and from a simplified model of heavy vector triplets are derived. As a result, a corresponding observed (expected) lower mass limit of 1.52 (1.49) TeV is derived for the W' at the 95% confidence level.
Book Synopsis Search for WW and WZ Production in Lepton, Neutrino Plus Jets Final States at CDF Run II and Silicon Module Production and Detector Control System for the ATLAS SemiConductor Tracker by :
Download or read book Search for WW and WZ Production in Lepton, Neutrino Plus Jets Final States at CDF Run II and Silicon Module Production and Detector Control System for the ATLAS SemiConductor Tracker written by and published by . This book was released on 2008 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first part of this work, we present a search for WW and WZ production in charged lepton, neutrino plus jets final states produced in p{bar p} collisions with √s = 1.96 TeV at the Fermilab Tevatron, using 1.2 fb−1 of data accumulated with the CDF II detector. This channel is yet to be observed in hadron colliders due to the large singleWplus jets background. However, this decay mode has a much larger branching fraction than the cleaner fully leptonic mode making it more sensitive to anomalous triple gauge couplings that manifest themselves at higher transverse W momentum. Because the final state is topologically similar to associated production of a Higgs boson with a W, the techniques developed in this analysis are also applicable in that search. An Artificial Neural Network has been used for the event selection optimization. The theoretical prediction for the cross section is [sigma]{sub WW/WZ}{sup theory} x Br(W → l[nu]; W/Z → jj) = 2.09 ± 0.14 pb. They measured N{sub Signal} = 410 ± 212(stat) ± 102(sys) signal events that correspond to a cross section [sigma]{sub WW/WZ} x Br(W → l[nu]; W/Z → jj) = 1.47 ± 0.77(stat) ± 0.38(sys) pb. The 95% CL upper limit to the cross section is estimated to be [sigma] x Br(W → l[nu]; W/Z → jj)
Book Synopsis Study of $WZ$ Production with the D0 Detector by :
Download or read book Study of $WZ$ Production with the D0 Detector written by and published by . This book was released on 2010 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this Dissertation I present a detailed study of p{bar p} --> WZ production using fully leptonic decays of W and Z bosons with electrons and muons in the final state. Data used for the study were collected by the D0 detector at the Fermilab p{bar p} collider with a center-of-mass energy of (square root)s = 1.96 TeV and correspond to 4.1 fb−1 of integrated luminosity. The most precise measurement of the WZ production cross section is obtained and found to be in a good agreement with the standard model prediction. I also present a search for new phenomena in the WZ production by investigating the coupling between W and Z bosons and by searching for new charged particles that can decay into WZ boson pair. No evidence for new physics is found, and the most stringent limits are set on the anomalous WWZ coupling parameters and masses of charged resonances. This result also sets the stringest limit on one of the possible sources of electroweak symmetry breaking, a low-scale Technicolor with a typical heavy techni-pion hypothesis.
Book Synopsis Study of WZ Production with the D0 Detector by : Ketino Kaadze
Download or read book Study of WZ Production with the D0 Detector written by Ketino Kaadze and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this Dissertation I present a detailed study of ppbar->WZ production using fully leptonic decays of W and Z bosons with electrons and muons in the final state. Data used for the study were collected by the D0 detector at the Fermilab proton-antiproton collider with a center-of-mass energy of 1.96 TeV and correspond to 4.1 fb[surepscript]-1 of integrated luminosity. The most precise measurement of the WZ production cross section is obtained and found to be in a good agreement with the standard model prediction. I also present a search for new phenomena in the WZ production by investigating the coupling between W and Z bosons and by searching for new charged particles that can decay into WZ boson pair. No evidence for new physics is found, and the most stringent limits are set on the anomalous WWZ coupling parameters and masses of charged resonances. This result also sets the stringest limit on one of the possible sources of electroweak symmetry breaking, a low-scale Technicolor with a typical heavy techni-pion hypothesis.
Book Synopsis Measurement of the TtZ Production Cross Section in the Final State with Three Charged Leptons Using 36.1 Fb^-1 of Pp Collisions at 13 TeV at the ATLAS Detector by : Nils-Arne Rosien
Download or read book Measurement of the TtZ Production Cross Section in the Final State with Three Charged Leptons Using 36.1 Fb^-1 of Pp Collisions at 13 TeV at the ATLAS Detector written by Nils-Arne Rosien and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of the production cross section for a top quark pair in association with a Z boson (ttZ) is presented in this PhD thesis. Final states with exactly three charged leptons (electrons or muons) are used, taking into account the decay of the top quark pair in the lepton+jets channel and the decay of the Z boson into two charged leptons. The dataset used for this analysis corresponds to 36.1 fb^-1 of proton-proton collisions at a centre-of-mass energy of 13 TeV, recorded during 2015 and 2016 by the ATLAS detector at the Large Hadron Collider. The result of a profile likelihood fit ...
Book Synopsis A Search for Leptoquark and WZ Production with the D0 Detector in 1.8 TeV [root]s P−p Collisions with the 2 Jets + [missing]E[subscript T] Final State by : Christopher Hays
Download or read book A Search for Leptoquark and WZ Production with the D0 Detector in 1.8 TeV [root]s P−p Collisions with the 2 Jets + [missing]E[subscript T] Final State written by Christopher Hays and published by . This book was released on 2001 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Looking Inside Jets by : Simone Marzani
Download or read book Looking Inside Jets written by Simone Marzani and published by Springer. This book was released on 2019-05-11 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: This concise primer reviews the latest developments in the field of jets. Jets are collinear sprays of hadrons produced in very high-energy collisions, e.g. at the LHC or at a future hadron collider. They are essential to and ubiquitous in experimental analyses, making their study crucial. At present LHC energies and beyond, massive particles around the electroweak scale are frequently produced with transverse momenta that are much larger than their mass, i.e., boosted. The decay products of such boosted massive objects tend to occupy only a relatively small and confined area of the detector and are observed as a single jet. Jets hence arise from many different sources and it is important to be able to distinguish the rare events with boosted resonances from the large backgrounds originating from Quantum Chromodynamics (QCD). This requires familiarity with the internal properties of jets, such as their different radiation patterns, a field broadly known as jet substructure. This set of notes begins by providing a phenomenological motivation, explaining why the study of jets and their substructure is of particular importance for the current and future program of the LHC, followed by a brief but insightful introduction to QCD and to hadron-collider phenomenology. The next section introduces jets as complex objects constructed from a sequential recombination algorithm. In this context some experimental aspects are also reviewed. Since jet substructure calculations are multi-scale problems that call for all-order treatments (resummations), the bases of such calculations are discussed for simple jet quantities. With these QCD and jet physics ingredients in hand, readers can then dig into jet substructure itself. Accordingly, these notes first highlight the main concepts behind substructure techniques and introduce a list of the main jet substructure tools that have been used over the past decade. Analytic calculations are then provided for several families of tools, the goal being to identify their key characteristics. In closing, the book provides an overview of LHC searches and measurements where jet substructure techniques are used, reviews the main take-home messages, and outlines future perspectives.
Book Synopsis Search for Resonant WW and WZ Production in Ppbar Collisions At?s by :
Download or read book Search for Resonant WW and WZ Production in Ppbar Collisions At?s written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The standard model of particle physics is expected to be a low energy effective theory valid for particle interactions below the TeV scale. Above this scale, extensions to the standard model (SM) augment the existing particle content, leading to enhanced production of many final states at colliders. Specifically, the production and decay of massive charged or neutral particles can produce an excess of W boson pairs for neutral particles or W and Z boson pairs for charged particles. We search for resonant WW or WZ production using up to 5.4 fb−1 of integrated luminosity collected by the D0 experiment in Run II of the Fermilab Tevatron Collider. The data are consistent with the standard model background expectation, and we set limits on a resonance mass using the sequential standard model (SSM) W(prime) boson and the Randall-Sundrum model graviton G as benchmarks. We exclude an SSM W(prime) boson in the mass range 180-690 GeV and a Randall-Sundrum graviton in the range 300-754 GeV at 95% CL.
Book Synopsis Search for Resonant WZ to Lvll Production Using 13 Fb^{-1} in \sqrt{s} by : Peter Vladimir Loscutoff
Download or read book Search for Resonant WZ to Lvll Production Using 13 Fb^{-1} in \sqrt{s} written by Peter Vladimir Loscutoff and published by . This book was released on 2013 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Tt[bar]bb[bar] and Tt[bar]jj Production Rate and the Tt[bar]H Contribution in the Lepton+jets Final State at √s by : Tobias Verlage
Download or read book Measurement of the Tt[bar]bb[bar] and Tt[bar]jj Production Rate and the Tt[bar]H Contribution in the Lepton+jets Final State at √s written by Tobias Verlage and published by . This book was released on 2017* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Standard Theory of Particle Physics by : Luciano Maiani
Download or read book The Standard Theory of Particle Physics written by Luciano Maiani and published by World Scientific Publishing Company. This book was released on 2016-08-25 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book gives a quite complete and up-to-date picture of the Standard Theory with an historical perspective, with a collection of articles written by some of the protagonists of present particle physics. The theoretical developments are described together with the most up-to-date experimental tests, including the discovery of the Higgs Boson and the measurement of its mass as well as the most precise measurements of the top mass, giving the reader a complete description of our present understanding of particle physics.
Book Synopsis The Composite Nambu-Goldstone Higgs by : Giuliano Panico
Download or read book The Composite Nambu-Goldstone Higgs written by Giuliano Panico and published by Springer. This book was released on 2015-11-17 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Hierarchy Problem is arguably the most important guiding principle concerning the extension to high-energy scales of the Standard Model (SM) of Fundamental Interactions. Every scenario for addressing this issue unavoidably predicts new physics in the TeV energy range, which is currently being probed directly by the LHC experimental program. Among the possible solutions to the Hierarchy Problem, the scenario of a composite Higgs boson is a very simple idea and a rather plausible picture has emerged over the years by combining the following ingredients: First, the Higgs must be a (pseudo-) Nambu-Goldstone boson, rather than a generic hadron of the new strong sector. Second, through the so-called ‘partial compositeness’, SM particles mix with strong sector resonances with suitable quantum numbers, so that they become a linear combination of elementary and composite degrees of freedom. Recently, general descriptions of the Composite Higgs Scenario were developed which successfully capture the relevant features of this theoretical framework in a largely model-independent way. The present book provides a concise and illustrative introduction to the subject for a broad audience of graduate students and non-specialist researchers in the fields of particle, nuclear and gravitational physics.
Book Synopsis Search for $WZ/ZZ$ Production in the Lepton(s) + MET + Jets Channel with the CDF Experiment at the Tevatron Collider by :
Download or read book Search for $WZ/ZZ$ Production in the Lepton(s) + MET + Jets Channel with the CDF Experiment at the Tevatron Collider written by and published by . This book was released on 2014 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we present a search for the WZ and ZZ production in a final state ("W+2 jets") with a leptonically-decaying W and two energetic jets. We use the full dataset (+"Ldt = 8:9 fb-1) recorded with the CDF detector at Fermilab. The challenge consists in extracting the small Z-hadronic peak from the large amount of background processes. Those processes also include the WW, whose hadronic peak cannot be distinguished from the Z peak, due to the poor calorimeter resolution. In the past such a signature was used to measure the diboson cross section, which is highly dominated by the WW cross section.
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