Search For Higgs Boson Production In Oppositely Charged Dilepton And Missing Energy Final States In 9 7 Fb 1 Of P Bar P Collisions At Sqrt S
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Search For Higgs Boson Production In Oppositely Charged Dilepton And Missing Energy Final States In 9 7 Fb 1 Of P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2013
Search For Higgs Boson Production In Oppositely Charged Dilepton And Missing Energy Final States In 9 7 Fb 1 Of P Bar P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Search For Higgs Boson Production In Dilepton And Missing Energy Final States With 5 4 Fb 1 Of P Pbar Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2010
Search For Higgs Boson Production In Dilepton And Missing Energy Final States With 5 4 Fb 1 Of P Pbar Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
A search for the standard model Higgs boson is presented using events with two charged leptons and large missing transverse energy selected from 5.4 fb−1 of integrated luminosity in p{bar p} collisions at √s = 1.96 TeV collected with the D0 detector at the Fermilab Tevatron Collider. No significant excess of events above background predictions is found, and observed (expected) upper limits at 95% confidence level on the rate of Higgs boson production are derived that are a factor of 1.55 (1.36) above the predicted standard model cross section at m{sub H} = 165 GeV.
Search For Associated Higgs Boson Production Using Like Charge Dilepton Events In P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2011
Search For Associated Higgs Boson Production Using Like Charge Dilepton Events In P Bar P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
We present a search for associated Higgs boson production in the process p{anti p} → W/ZH → l{sup {+-}} l{sup {+-}} + X in ee, e[mu], and [mu][mu] final states. The search is based on data collected by the D0 experiment at the Fermilab Tevatron Collider at √{ovr s} = 1.96 TeV corresponding to 5.3 fb−1 of integrated luminosity. We require two isolated leptons (electrons or muons) with the same electric charge and additional kinematic requirements. No significant excess above background is observed, and we set 95% C.L. observed (expected) upper limits on ratio of the production cross sectin to the standard model expectation of 6.4 (7.3) for a Higgs boson mass of 165 GeV and 13.5 (19.8) for a mass of 115 GeV.
Searches For A High Mass Higgs Boson Produced In P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2010
Searches For A High Mass Higgs Boson Produced In P Bar P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
In this Thesis the electro-weak spontaneous symmetry breaking of the Standard Model (SM) is studied by searching for the scalar Higgs particle in the proton antiproton collisions of the Tevatron collider, at the center of mass energy √s = 1.96 TeV. We report on the inclusive search for the Higgs boson decaying to two W bosons in the final state characterized by two charged leptons (e or [mu]) and two neutrinos. The analysis of 4.8 fb$^{-1}$ of data recorded by the Collider Detector at Fermilab (CDF) shows no evidence of its production. We set 95% Confidence Level upper limits on the production cross section as a function of the mass $m_H$ in the range 110 to 200 GeV/$c^2$. For $m_H$ = 165 GeV/$c^2$ the observed limit is 1.3 times the SM predicted cross section ([sigma]H); the expected limit, in absence of signal, is 1.2+0.6 -0.4[sigma](H). These limits are the most stringent ones set by a single experiment up to date, for $m_H$ > 130 GeV/c2.
A Search For The Higgs Boson Using Neural Networks In Events With Missing Energy And Boldit B Quark Jets In P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2009
A Search For The Higgs Boson Using Neural Networks In Events With Missing Energy And Boldit B Quark Jets In P Bar P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
We report on a search for the standard model Higgs boson produced in association with a W or Z boson in p{bar p} collisions at (square root)s = 1.96 TeV recorded by the CDF II experiment at the Tevatron in a data sample corresponding to an integrated luminosity of 2.1 fb−1. We consider events which have no identified charged leptons, an imbalance in transverse momentum, and two or three jets where at least one jet is consistent with originating from the decay of a b hadron. We find good agreement between data and predictions. We place 95% confidence level upper limits on the production cross section for several Higgs boson masses ranging from 110 GeV/c2 to 150 GeV/c2. For a mass of 115 GeV/c2 the observed (expected) limit is 6.9 (5.6) times the standard model prediction.
Search For A High Mass Higgs Boson Produced In Proton Anti Proton Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2011
Search For A High Mass Higgs Boson Produced In Proton Anti Proton Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
In this Thesis a search for Higgs boson production has been performed analysing data gathered by the Collider Detector at Fermilab (CDF) from proton-antiproton (p$\bar{p}$) collisions at the center of mass energy √s = 1.96 TeV. Event selection has been optimized on Higgs decaying into W+W- bosons in order to reconstruct final states with two charged leptons formed by either an electron and a tau or a muon and a tau focusing on taus decaying into hadrons. No evidence of Higgs production has been found analysing 4.8 fb-1 of data and an up- per limit has been set on the production cross section as a function of the mass mH in the range from 130 to 200 GeV/c2 with a 95% Confidence Level. For a Higgs mass hypothesis of 160 GeV/c2 the observed limit is 33.5 times the Standard Model predicted cross section [sigma]SM while the expected upper limit for the same mass is 19.6×[sigma]SM. The high recorded luminosity along with the development of new analysis techniques are expected to improve the CDF sensitivity to the search for Higgs boson with hadronic taus reconstructed in the final state, in the mass range 130 to 200 GeV/c2.
Search For The Higgs Boson Produced With Z To Ell Ell In P Bar P Collisions At Sqrt S
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Author :
language : en
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Release Date : 2008
Search For The Higgs Boson Produced With Z To Ell Ell In P Bar P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The authors present a search for the Higgs boson in the process q{bar q} → ZN → l+l− b{bar b}. The analysis uses an integrated luminosity of 1 fb−1 of p{bar p} collisions produced at √s = 1.96 TeV and accumulated by the upgraded Collider Detector at Fermilab (CDF II). They employ artificial neural networks both to correct jets mismeasured in the calorimeter, and to distinguish the signal kinematic distributions from those of the background. They see no evidence for Higgs boson production, and set 95% CL upper limits on [sigma]{sub ZH} · [Beta](H → b{bar b}), ranging from 1.5 pb to 1.2 pb for a Higgs mass (m{sub H}) of 110 to 150 GeV/c2.
A Search For Long Lived Doubly Charged Higgs Boson Production In Anti P P Collisions At Sqrt S
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Author : Joshua P. Tuttle
language : en
Publisher:
Release Date : 2005
A Search For Long Lived Doubly Charged Higgs Boson Production In Anti P P Collisions At Sqrt S written by Joshua P. Tuttle and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
We present a search for a quasi-stable doubly-charged Higgs particle at CDF using the Fermilab Tevatron for √s = 1.96 TeV. The data presented are from approximately 290 pb−1 of integrated luminosity collected using the upgraded Run 2 Collider Detector at Fermilab. These data were taken between February, 2002 and February, 2004. The long-lived decay products of Z's are selected in the central detector region (
Search For A Higgs Boson In Diphoton Final States With The D0 Detector In 9 6 Fb 1 Of P Bar P Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2013
Search For A Higgs Boson In Diphoton Final States With The D0 Detector In 9 6 Fb 1 Of P Bar P Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Search For The Associated Production Of A Higgs Boson With A Single Top Quark In Proton Proton Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2016
Search For The Associated Production Of A Higgs Boson With A Single Top Quark In Proton Proton Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Our paper presents the search for the production of a Higgs boson in association with a single top quark, using data collected in proton-proton collisions at a center-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb-1. The search exploits a variety of Higgs boson decay modes resulting in final states with photons, bottom quarks, and multiple charged leptons, including tau leptons, and employs a variety of multivariate techniques to maximize sensitivity to the signal. Furthermore, our analysis is optimized for the opposite sign of the Yukawa coupling to that in the standard model and corresponding to a large enhancement of the signal cross section. In the absence of an excess of candidate signal events over the background predictions, 95% confidence level observed (expected) upper limits on anomalous tHq production are set, ranging between 600 (450) fb and 1000 (700) fb depending on the assumed diphoton branching fraction of the Higgs boson. This is the first time that results on anomalous tHq production have been reported.