[PDF] Searches For New Phenomena Using Events With Three Or More Charged Leptons In Pp Collisions At Sqrt S - eBooks Review

Searches For New Phenomena Using Events With Three Or More Charged Leptons In Pp Collisions At Sqrt S


Searches For New Phenomena Using Events With Three Or More Charged Leptons In Pp Collisions At Sqrt S
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Searches For New Phenomena Using Events With Three Or More Charged Leptons In Pp Collisions At Sqrt S


Searches For New Phenomena Using Events With Three Or More Charged Leptons In Pp Collisions At Sqrt S
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Author : David Ren-Hwa Yu
language : en
Publisher:
Release Date : 2015

Searches For New Phenomena Using Events With Three Or More Charged Leptons In Pp Collisions At Sqrt S written by David Ren-Hwa Yu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.


This dissertation presents two searches for phenomena beyond the Standard Model using events with three or more charged leptons. The searches are based on 20.3 fb-1 of proton- proton collision data with a center-of-mass energy of √s = 8 TeV collected by the ATLAS detector at the CERN Large Hadron Collider in 2012. The first is a model-independent search for excesses beyond Standard Model expectations in many signal regions. The events are required to have least three charged leptons, of which at least two are electrons or muons, and at most one is a hadronically decaying [tau] lepton. The selected events are categorized based on the flavor and charge of the leptons, and the signal regions are defined using several kinematic variables sensitive to beyond the Standard Model phenomena. The second search looks for new heavy leptons decaying resonantly to three electrons or muons, two of which are produced through an intermediate Z boson. The resonant decay produces a narrowly- peaked excess in the trilepton mass spectrum. In both cases, no significant excess beyond Standard Model expectations is observed, and the data are used to set limits on models of new physics. The model-independent trilepton search is used to confront a model of doubly charged scalar particles decaying to e[tau] or [mu][tau], excluding masses below 400 GeV at 95% confidence level. The trilepton resonance search is used to test models of vector-like leptons and the type III neutrino seesaw mechanism. The vector-like lepton model is excluded for most of the mass range 114 GeV - 176 GeV, while the type III seesaw model is excluded for most the mass range 100 GeV - 468 GeV. Both searches also present tools to facilitate reinterpretations in the context of other models predicting the production of three or more charged leptons.



Search For New Phenomena In Three Or Four Lepton Events In Pp Collisions At Square Root S


Search For New Phenomena In Three Or Four Lepton Events In Pp Collisions At Square Root S
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Author : [Study Group] ATLAS Collaboration CERN
language : en
Publisher:
Release Date : 2022

Search For New Phenomena In Three Or Four Lepton Events In Pp Collisions At Square Root S written by [Study Group] ATLAS Collaboration CERN and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.


Abstract: A search with minimal model dependence for physics beyond the Standard Model in events featuring three or four charged leptons (3l and 4l, ) is presented. The analysis aims to be sensitive to a wide range of potential new-physics theories simultaneously. This analysis uses data from pp collisions delivered by the Large Hadron Collider at a centre-of-mass energy of TeV and recorded with the ATLAS detector, corresponding to the full Run 2 dataset of 139 fb−1. The 3l and 4l phase space is divided into 22 event categories according to the number of leptons in the event, the missing transverse momentum, the invariant mass of the leptons, and the presence of leptons originating from a Z-boson candidate. These event categories are analysed independently for the presence of deviations from the Standard Model. No statistically significant deviations from the Standard Model predictions are observed. Upper limits for all signal regions are reported in terms of the visible cross-section



Energy Research Abstracts


Energy Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1990

Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Power resources categories.


Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.



Search For A Fourth Generation Quark More Massive Than The Z0 Boson In P P Collisions At Square Root S


Search For A Fourth Generation Quark More Massive Than The Z0 Boson In P P Collisions At Square Root S
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Author : Joao Pedro Barreiro Guimaraes da Costa
language : en
Publisher:
Release Date : 2000

Search For A Fourth Generation Quark More Massive Than The Z0 Boson In P P Collisions At Square Root S written by Joao Pedro Barreiro Guimaraes da Costa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.




Government Reports Announcements Index


Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1984

Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Science categories.




Government Reports Annual Index


Government Reports Annual Index
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Author :
language : en
Publisher:
Release Date : 199?

Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 199? with categories.




Scientific And Technical Aerospace Reports


Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1992

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Aeronautics categories.




High Energy Physics Index


High Energy Physics Index
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Author :
language : en
Publisher:
Release Date : 1990

High Energy Physics Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Nuclear physics categories.




Comprehensive Dissertation Index


Comprehensive Dissertation Index
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Author :
language : en
Publisher:
Release Date : 1989

Comprehensive Dissertation Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Dissertations, Academic categories.




Inis Atomindex


Inis Atomindex
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Author :
language : en
Publisher:
Release Date : 1983

Inis Atomindex written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Nuclear energy categories.