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Search For R Parity Violating Supersymmetry In Multilepton Final States With The Do Detector
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Book Synopsis Search for R-parity Violating Supersymmetry in Multilepton Final States Using the ATLAS Detector by : Matthew Henry Klein
Download or read book Search for R-parity Violating Supersymmetry in Multilepton Final States Using the ATLAS Detector written by Matthew Henry Klein and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a search for R-parity violating supersymmetry at sqrt(s)=13 TeV, using approximately 13.3 fb-1 of data collected by ATLAS in 2015 and the first half of 2016. Events are required to contain at least four leptons (electrons or muons only) that are not the product of a Z boson decay, and this requirement results in a low Standard Model background and a high sensitivity to various physics models beyond the Standard Model. No significant deviations from the Standard Model are observed in data, and results are used to set upper limits on the event yields from processes beyond the Standard Model. In a simplified model of chargino production with indirect R-parity violating decays, limits are extended by approximately 400 GeV relative to the Run 1 search, excluding chargino masses below 1.1 TeV.
Book Synopsis Searches for R-parity Violating Supersymmetry in Multilepton Final States with the ATLAS Detector by :
Download or read book Searches for R-parity Violating Supersymmetry in Multilepton Final States with the ATLAS Detector written by and published by . This book was released on 2015 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for R-parity Violating Supersymmetry in Multilepton Final States with the DØ Detector by : Daniela Käfer
Download or read book Search for R-parity Violating Supersymmetry in Multilepton Final States with the DØ Detector written by Daniela Käfer and published by . This book was released on 2006 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for R-parity Violating Supersymmetry in Multi-lepton Final States with the ATLAS Detector by : Robert Michael Zimmermann
Download or read book Search for R-parity Violating Supersymmetry in Multi-lepton Final States with the ATLAS Detector written by Robert Michael Zimmermann and published by . This book was released on 2014 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for R-parity Violating Supersymmetry in Multi-lepton Final States with the ATLAS Detector by : Robert Michael Zimmermann
Download or read book Search for R-parity Violating Supersymmetry in Multi-lepton Final States with the ATLAS Detector written by Robert Michael Zimmermann and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for R-parity Violating Supersymmetry in Multilepton Final States with the D0 Detector by : Daniela Käfer
Download or read book Search for R-parity Violating Supersymmetry in Multilepton Final States with the D0 Detector written by Daniela Käfer and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for R-parity Violating Supersymmetry in the Multilepton Final State by : Alon Jacques Attal
Download or read book Search for R-parity Violating Supersymmetry in the Multilepton Final State written by Alon Jacques Attal and published by . This book was released on 2006 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a search for physics beyond the standard model of elementary particles in events containing three or more charged leptons in the final state. The search is based on an R-parity violating supersymmetric model that assumes supersymmetric particles are pair produced at hadron colliders and the R-parity violating coupling is small enough so that these particles "cascade" decay into the lightest supersymmetric particle. The lightest supersymmetric particle may only decay into two charged leptons (electrons or muons) plus a neutrino through a lepton number violating interaction. Proton-antiproton collision events produced with s = 1.96 TeV are collected between March 2002 and August 2004 with an integrated luminosity of 346 pb-1. R-parity violating supersymmetry is sought for in two data samples, one with exactly three leptons and one with four or more leptons. The trilepton sample has a modest background primarily from Drell-Yan events where an additional lepton is a result of photon conversions or jet misidentification while the four or more lepton sample has an extremely low background. In the three lepton samples 6 events are observed while in the four or more lepton sample zero events are observed. These results are consistent with the standard model expectation and are interpreted as mass limits on the lightest neutralino ( c&d5;01 ) and lightest chargino ( c&d5;+/- 1 ) particles. The c&d5;01 mass is constrained to be heavier than 97.7 to 110.4 GeV/ c2, while the c&d5;+/- 1 mass is constrained to be heavier than 185.3 to 202.7 GeV/ c2, depending on the supersymmetry scenario.
Book Synopsis Search for R-parity Violating Supersymmetry with the D0 Detector by : Christian Autermann
Download or read book Search for R-parity Violating Supersymmetry with the D0 Detector written by Christian Autermann and published by . This book was released on 2006 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Searches for R-parity violating supersymmetry with the D0 detector at the Fermilab Tevatron p{bar p}-collider are presented. In the case of non-zero LL{bar E} couplings {lambda}{sub ijk} {approx}> 0.01, multi-lepton final states, and for a small coupling {lambda}{sub 122} “0.01 di-muon final states are studied. The case of non-zero LQ{bar D} coupling {lambda}{prime}{sub 211} leads to final states with two muons and jets. A total integrated luminosity of 0.38 fb{sup -1} collected between April 2002 and August 2004 is utilized. The observed numbers of events are in agreement with the Standard Model expectation, and limits on R{sub p} supersymmetry are derived, extending significantly previous bounds.
Book Synopsis Searches for Supersymmetry in Multilepton Final States with the ATLAS Detector by : Steven Farrell
Download or read book Searches for Supersymmetry in Multilepton Final States with the ATLAS Detector written by Steven Farrell and published by . This book was released on 2014 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two searches for supersymmetry in multilepton final states are presented using pp collisions at sqrt(s) = 8 TeV in the ATLAS detector. First, a search for electroweak production of charginos and neutralinos in the three-lepton plus missing transverse momentum channel is detailed with an emphasis on the fake-lepton background estimation technique. No significant excess above the Standard Model prediction is observed in the signal regions. Exclusion limits are thus placed on simplified models of chargino1-neutralino2 production and decays via intermediate sleptons, SM gauge bosons, and Higgs bosons. The results are also interpreted in terms of the phenomenological MSSM. Next, a search for R-parity violating and R-parity conserving supersymmetric scenarios in the four-lepton channel is presented. No significant excess is observed, so exclusion limits are placed R-parity violating simplified models in which the lightest supersymmetric particle is the lightest neutralino, which promptly decays to leptons. Exclusion limits are also placed on R-parity conserving simplified models of neutralino2-neutralino3 production.
Book Synopsis Search for R-parity Violating Supersymmetry with the ATLAS Detector by :
Download or read book Search for R-parity Violating Supersymmetry with the ATLAS Detector written by and published by . This book was released on 2014 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Searches for R-parity-violating Supersymmetry in Pp Collisions at Sqrt(s) by :
Download or read book Searches for R-parity-violating Supersymmetry in Pp Collisions at Sqrt(s) written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented from searches for R-parity-violating supersymmetry in events produced in pp collisions at sqrt(s)=8 TeV at the LHC. Final states with 0, 1, 2, or multiple leptons are considered independently. The analysis is performed on data collected by the CMS experiment corresponding to an integrated luminosity of 19.5 inverse femtobarns. No excesses of events above the standard model expectations are observed, and 95% confidence level limits are set on supersymmetric particle masses and production cross sections. The results are interpreted in models featuring R-parity-violating decays of the lightest supersymmetric particle, which in the studied scenarios can be either the gluino, a bottom squark, or a neutralino. In a gluino pair production model with baryon number violation, gluinos with a mass less than 0.98 and 1.03 TeV are excluded, by analyses in a fully hadronic and one-lepton final state, respectively. An analysis in a dilepton final state is used to exclude bottom squarks with masses less than 307 GeV in a model considering bottom squark pair production. Multilepton final states are considered in the context of either strong or electroweak production of superpartners, and are used to set limits on the masses of the lightest supersymmetric particles. These limits range from 300 to 900 GeV in models with leptonic and up to approximately 700 GeV in models with semileptonic R-parity-violating couplings.
Book Synopsis Search for R-parity Violating Supersymmetry Via the LL Anti-E Couplings Lambda(121), Lambda(122) Or Lambda(133) in P Anti-p Collisions at S**ư by :
Download or read book Search for R-parity Violating Supersymmetry Via the LL Anti-E Couplings Lambda(121), Lambda(122) Or Lambda(133) in P Anti-p Collisions at S**ư written by and published by . This book was released on 2006 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for gaugino pair production with a trilepton signature in the framework of R-parity violating supersymmetry via the couplings ?121, ?122, or ?133 is presented. The data, corresponding to an integrated luminosity of L ≈ 360 pb−1, were collected from April 2002 to August 2004 with the D0 detector at the Fermilab Tevatron Collider, at a center-of-mass energy of √s = 1.96 TeV. This analysis considers final states with three charged leptons with the flavor combinations eel, ??l, and ee? (l = e or ?). No evidence for supersymmetry is found and limits at the 95% confidence level are set on the gaugino pair production cross section and lower bounds on the masses of the lightest neutralino and chargino are derived in two supersymmetric models.
Book Synopsis Search for R-parity Violating Supersymmetry with Displaced Vertices in Proton-proton Collisions at Sqrt(s) by :
Download or read book Search for R-parity Violating Supersymmetry with Displaced Vertices in Proton-proton Collisions at Sqrt(s) written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are reported from a search for R-parity violating supersymmetry in proton-proton collision events collected by the CMS experiment at a center-of-mass energy of sqrt(s)=8 TeV. The data sample corresponds to an integrated luminosity of 17.6 inverse femtobarns. This search assumes a minimal flavor violating model in which the lightest supersymmetric particle is a long-lived neutralino or gluino, leading to a signal with jets emanating from displaced vertices. In a sample of events with two displaced vertices, no excess yield above the expectation from standard model processes is observed, and limits are placed on the pair production cross section as a function of mass and lifetime of the neutralino or gluino. At 95% confidence level, the analysis excludes cross sections above approximately 1 fb for neutralinos or gluinos with mass between 400 and 1500 GeV and mean proper decay length between 1 and 30 mm. Assuming gluino pair production cross sections, gluino masses are excluded below 1 and 1.3 TeV for mean proper decay lengths of 300 micrometers and 1 mm, respectively, and below 1.4 TeV for the range 2-30 mm. The results are also applicable to other models in which long-lived particles decay into multijet final states.
Book Synopsis Supersymmetry After the Higgs Discovery by : Ignatios Antoniadis
Download or read book Supersymmetry After the Higgs Discovery written by Ignatios Antoniadis and published by Springer. This book was released on 2014-08-18 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supersymmetry (SUSY) is a new symmetry that relates bosons and fermions, which has strong support at both the mathematical and the physical level. This book offers a comprehensive review, following the development of SUSY from its very early days up to present. The order of the contributions should provide the reader with the historical development as well as the latest theoretical updates and interpretations, and experimental constraints from particle accelerators and dark matter searches. It is a great pleasure to bring together here contributions from authors who initiated or have contributed significantly to the development of this theory over so many years. To present a balanced point of view, the book also includes a closing contribution that attempts to describe the physics beyond the Standard Model in the absence of SUSY. The contributions to this book have been previously published in The European Physical Journal C - Particles and Fields.
Book Synopsis Search for Top Squarks in R-parity-violating Supersymmetry Using Three Or More Leptons and B-tagged Jets by :
Download or read book Search for Top Squarks in R-parity-violating Supersymmetry Using Three Or More Leptons and B-tagged Jets written by and published by . This book was released on 2013 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for RPV Scalar Leptons at Tevatron by : Shan-Huei Chuang
Download or read book Search for RPV Scalar Leptons at Tevatron written by Shan-Huei Chuang and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We reviewed CDF and D0 searches for R-parity violation supersymmetry in leptons involved final states using up to 344 {+-} 21 pb{sup -1} Tevatron Run II data of p{bar p} collisions at {radical}s = 1.96 TeV. All the results were in good agreement with the Standard Model expectations. No evidence of new physics was observed. However, owing to the improvement on detectors, energy and luminosity from Run I to Run II, the limits for the existence of R-parity violation supersymmetry have been greatly advanced.
Book Synopsis Search for R-parity Violating Supersymmetry in Pp Collisions at S√ by :
Download or read book Search for R-parity Violating Supersymmetry in Pp Collisions at S√ written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
