Improved Search For A Higgs Boson Produced In Association With Z L L In Proton Antiproton Collisions At Sqrt S
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Improved Search For A Higgs Boson Produced In Association With Z L L In Proton Antiproton Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2010
Improved Search For A Higgs Boson Produced In Association With Z L L In Proton Antiproton 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.
We present a search for the standard model Higgs boson produced with a Z boson in 4.1 fb−1 of data collected with the CDF II detector at the Tevatron. In events consistent with the decay of the Higgs boson to a bottom-quark pair and the Z boson to electrons or muons, we set 95% credibility level upper limits on the ZH production cross section times the H --> b{bar b} branching ratio. Improved analysis methods enhance signal sensitivity by 20% relative to previous searches beyond the gain due to the larger data sample. At a Higgs boson mass of 115 GeV/c2 we set a limit of 5.9 times the standard model value.
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.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1992-02
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 1992-02 with Science categories.
Cities And Their Vital Systems
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Author : Advisory Committee on Technology and Society
language : en
Publisher: National Academies Press
Release Date : 1989
Cities And Their Vital Systems written by Advisory Committee on Technology and Society and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Social Science categories.
Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.
Dissertation Abstracts International
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Author :
language : en
Publisher:
Release Date : 1994
Dissertation Abstracts International written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Dissertations, Academic categories.
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 Higgs Boson Production In Proton Antiproton Collisions At Square Root Of S
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Author : Yoshiaki Kusakabe
language : en
Publisher:
Release Date : 2006
Search For Higgs Boson Production In Proton Antiproton Collisions At Square Root Of S written by Yoshiaki Kusakabe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
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.
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.
Search For Associated Production Of Z And Higgs Bosons In Proton Antiproton Collisions At 1 96 Tev
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Author :
language : en
Publisher:
Release Date : 2010
Search For Associated Production Of Z And Higgs Bosons In Proton Antiproton Collisions At 1 96 Tev 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.
We present a search for associated production of Z and Higgs bosons in 4.2 fb−1 of {bar p}p collisions at (square root)s = 1.96 TeV, produced in RunII of the Tevatron and recorded by the D0 detector. The search is performed in events containing at least two muons and at least two jets. The ZH signal is distinguished from the expected backgrounds by means of multivariate classifiers known as random forests. Binned random forest output distributions are used in comparing the data to background-only and signal+background hypotheses. No excess is observed in the data, so we set upper limits on ZH production with a 95% confidence level.