Search For The Higgs Boson In The All Hadronic Final State Using The Cdf Ii Detector PDF Download
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Release | : 2013 |
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Download Search for the Higgs Boson in the All-Hadronic Final State Using the CDF II Detector Book in PDF, ePub and Kindle
This thesis reports the result of a search for the Standard Model Higgs boson in events containing four reconstructed jets associated with quarks. For masses below 135 GeV/c2, the Higgs boson decays to bottom-antibottom quark pairs are dominant and result primarily in two hadronic jets. An additional two jets can be produced in the hadronic decay of a W or Z boson produced in association with the Higgs boson, or from the incoming quarks that produced the Higgs boson through the vector boson fusion process. The search is performed using a sample of s = sqrt(1.96) TeV proton-antiproton collisions corresponding to an integrated luminosity of 9.45 fb-1 recorded by the CDF II detector. The data are in agreement with the background model and 95% credibility level upper limits on Higgs boson production are set as a function of the Higgs boson mass. The median expected (observed) limit for a 125 GeV/c2 Higgs boson is 11.0 (9.0) times the predicted standard model rate.
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Release | : 2012 |
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Download Search for the Higgs Boson in the All-hadronic Final State Using the Full CDF Data Set Book in PDF, ePub and Kindle
Author | : Eric Ouellette |
Publisher | : Springer |
Total Pages | : 114 |
Release | : 2015-01-20 |
Genre | : Science |
ISBN | : 3319135996 |
Download Search for the Higgs Boson in the Vector Boson Fusion Channel at the ATLAS Detector Book in PDF, ePub and Kindle
This Thesis describes the first measurement of, and constraints on, Higgs boson production in the vector boson fusion mode, where the Higgs decays to b quarks (the most common decay channel), at the LHC. The vector boson fusion mode, in which the Higgs is produced simultaneously with a pair of quark jets, provides an unparalleled opportunity to study the detailed properties of the Higgs, including the possibility of parity and CP violation, as well as its couplings and mass. It thus opens up this new field of study for precision investigation as the LHC increases in energy and intensity, leading the way to this new and exciting arena of precision Higgs research.
Author | : Luca Scodellaro |
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Total Pages | : 198 |
Release | : 2001 |
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Download Perspectives for Higgs Boson Search in Full Hadronic Final States at CDF 2 Book in PDF, ePub and Kindle
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Total Pages | : 110 |
Release | : 2009 |
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Download A Search for the Higgs Boson in the $ZH$ Dilepton Decay Channel at CDF II. Book in PDF, ePub and Kindle
This dissertation describes a search for the Standard Model Higgs boson produced in association with the Z boson via Higgs-strahlung at the CDF II detector at the Tevatron. At a Higgs boson mass between 100 GeV/c2 and 135 GeV/c2, the primary Higgs decay mode is to a pair of b quarks. The associated Z boson can decay to a pair of electrons or muons, allowing detection of a final event signature of two visible leptons and two b quarks. This final state allows reduction of large QCD backgrounds compared to a hadronic Z boson decay, leading to a more sensitive search. To increase sensitivity, standard model matrix element probabilities for ZH signal and the dominant backgrounds are used as components to a likelihood fit in signal fraction. In 2.7 fb−1 of CDF II data, we see no evidence of production of a Higgs boson with a mass between 100 GeV c2 and 150 GeV/c2. Using the Feldman-Cousins technique to set a limit, at 95% coverage and a Higgs boson mass of 115 GeV/c2, the median expected limit was 12.1 x [sigma]{sub SM} and a limit of 8.2 x [sigma]{sub SM} was observed, where [sigma]{sub SM} is the NNLO theoretical cross section of p{bar p} →ZH → l +l -b{bar b} at √s=1.96 TeV . Cross section limits are computed at a range of Higgs boson mass values between 100 GeV/c 2 and 150 GeV/c2.
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Total Pages | : 60 |
Release | : 2001 |
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Download A Search for the Higgs Boson Using Very Forward Tracking Detectors with CDF. Book in PDF, ePub and Kindle
The authors propose to add high precision track detectors 55 m downstream on both (E and W) sides of CDF, to measure high Feynman-x protons and antiprotons in association with central states. A primary motivation is to search for the Higgs boson, and if it is seen to measure its mass precisely. The track detectors will be silicon strip telescopes backed up by high resolution time-of-flight counters. They will have four spectrometer arms, for both sides of the p and {bar p} beams. The addition of these small detectors effectively converts the Tevatron into a gluon-gluon collider with √s from 0 to ≈ 200 GeV. This experiment also measures millions/year clean high-
Author | : Xidong Wu |
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Total Pages | : 142 |
Release | : 2000 |
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Download A Search for the Standard Model Higgs Boson with Missing Mass Final States at Center-of-mass Energy at 188.6 GeV with the ALEPH Detector at LEP Book in PDF, ePub and Kindle
Author | : Luciano Maiani |
Publisher | : World Scientific Publishing Company |
Total Pages | : 483 |
Release | : 2016-08-25 |
Genre | : Science |
ISBN | : 9814733512 |
Download The Standard Theory of Particle Physics Book in PDF, ePub and Kindle
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.
Author | : Thomas C. Greening |
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Total Pages | : 386 |
Release | : 1999 |
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Download Search for the Standard Model Higgs Boson in Topologies with a Charged Lepton Pair at a Center-of-mass Energy of 188.6 GeV with the ALEPH Detector Book in PDF, ePub and Kindle
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Total Pages | : 4 |
Release | : 2009 |
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Download Higgs Boson Searches at CDF. Book in PDF, ePub and Kindle
Results are presented on searches for standard model and non-standard model production of a Higgs boson in pbar-p collisions at (square root)s = 1.96 TeV with the CDF II detector at the Fermilab Tevatron. Using data corresponding to 2-3.6 1/fb of integrated luminosity, searches are performed in a number of different production and decay modes. No excess in data above that expected from backgrounds is observed; therefore, we set upper limits on the production cross section times branching fraction as a function of the Higgs boson mass.