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ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.:/5 (16 download)
Download or read book Combined CDF and D0 Tests of the Spin and Parity of the Higgs Boson written by and published by . This book was released on 2014 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (96 download)
Download or read book Higgs Boson Studies at the Tevatron written by and published by . This book was released on 2016 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the combination of searches for the Standard Model Higgs boson at a center-of-mass energy of √s = 1.96 TeV , using the full Run 2 dataset collected with the CDF and D0 detectors at the Fermilab Tevatron collider. We also present combined measurements of Higgs Boson production cross sections, branching ratios, and couplings to fermions and bosons. Lastly, we present tests of different spin and parity hypotheses for a particle H of mass 125 GeV produced in association with a vector boson and decaying into a pair of b quarks, and place constraints on such hypotheses using the D0 data.
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ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (925 download)
Download or read book Tevatron Constraints on Models of the Higgs Boson with Exotic Spin and Parity Using Decays to Bottom-Antibottom Quark Pairs written by and published by . This book was released on 2015 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combined constraints from the CDF and D0 Collaborations on models of the Higgs boson with exotic spin J and parity P are presented and compared with results obtained assuming the standard model value JP=0+. Our collaborations analyzed approximately 10 fb-1 of proton-antiproton collisions with a center-of-mass energy of 1.96 TeV collected at the Fermilab Tevatron. Two models predicting exotic Higgs bosons with JP=0- and JP=2+ are tested. The kinematic properties of exotic Higgs boson production in association with a vector boson differ from those predicted for the standard model Higgs boson. Upper limits at the 95% credibility level on the production rates of the exotic Higgs bosons, expressed as fractions of the standard model Higgs boson production rate, are set at 0.36 for both the JP=0- hypothesis and the JP=2+ hypothesis. Furthermore, if the production rate times the branching ratio to a bottom-antibottom pair is the same as that predicted for the standard model Higgs boson, then the exotic bosons are excluded with significances of 5.0 standard deviations and 4.9 standard deviations for the JP=0- and JP=2+ hypotheses, respectively.
Author : Johannes Mattmann
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (963 download)
Download or read book Test of Spin and Parity of the Higgs Boson in the H→WW*→e Ny My Ny Decay Channel with the ATLAS Detector at the LHC written by Johannes Mattmann and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alexander I Studenikin
Publisher : World Scientific
ISBN 13 : 9813224576
Total Pages : 595 pages
Book Rating : 4.8/5 (132 download)
Download or read book Particle Physics At The Year Of Light - Proceedings Of The Seventeenth Lomonosov Conference On Elementary Particle Physics written by Alexander I Studenikin and published by World Scientific. This book was released on 2017-04-17 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume of these proceedings is devoted to a wide variety of items, both in theory and experiment, of particle physics such as electroweak theory, fundamental symmetries, tests of the standard model and beyond, neutrino and astroparticle physics, hadron physics, gravitation and cosmology, physics at the present and future accelerator.
Author : Aleandro Nisati
Publisher : World Scientific
ISBN 13 : 981442546X
Total Pages : 470 pages
Book Rating : 4.8/5 (144 download)
Download or read book Discovery Of The Higgs Boson written by Aleandro Nisati and published by World Scientific. This book was released on 2016-08-26 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent observation of the Higgs boson has been hailed as the scientific discovery of the century and led to the 2013 Nobel Prize in physics. This book describes the detailed science behind the decades-long search for this elusive particle at the Large Electron Positron Collider at CERN and at the Tevatron at Fermilab and its subsequent discovery and characterization at the Large Hadron Collider at CERN. Written by physicists who played leading roles in this epic search and discovery, this book is an authoritative and pedagogical exposition of the portrait of the Higgs boson that has emerged from a large number of experimental measurements. As the first of its kind, this book should be of interest to graduate students and researchers in particle physics.
Download or read book Combined CDF and D0 Upper Limits on Standard Model Higgs Boson Production with Up to 8.6 Fb-1 of Data written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We combine results from CDF and D0 on direct searches for the standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at √s = 1.96 TeV. Compared to the previous Tevatron Higgs boson search combination more data have been added, additional channels have been incorporated, and some previously used channels have been reanalyzed to gain sensitivity. We use the MSTW08 parton distribution functions and the latest theoretical cross sections when comparing our limits to the SM predictions. With up to 8.2 fb−1 of data analyzed at CDF and up to 8.6 fb−1 at D0, the 95% C.L. our upper limits on Higgs boson production are factors of 1.17, 1.71, and 0.48 times the values of the SM cross section for Higgs bosons of mass m{sub H} = 115 GeV/c2, 140 GeV/c2, and 165 GeV/c2, respectively. The corresponding median upper limits expected in the absence of Higgs boson production are 1.16, 1.16, and 0.57. There is a small (≈ 1[sigma]) excess of data events with respect to the background estimation in searches for the Higgs boson in the mass range 125
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ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (873 download)
Download or read book Combined CDF and D0 Upper Limits on $gg\to H\to W^+W^-$ and Constraints on the Higgs Boson Mass in Fourth-generation Fermion Models with Up to 8.2 Fb$^{-1}$ of Data written by and published by . This book was released on 2011 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: We combine results from searches by the CDF and D0 Collaborations for a standard model Higgs boson (H) in the processes gg → H → W+W− and gg → H → ZZ in p{bar p} collisions at the Fermilab Tevatron Collider at √s = 1.96 TeV. With 8.2 fb−1 of integrated luminosity analyzed at CDF and 8.1 fb−1 at D0, the 95% C.L. upper limit on [sigma](gg → H) x [Beta](H → W+W−) is 1.01 pb at m{sub H} = 120 GeV, 0.40 pb at m{sub H} = 165 GeV, and 0.47 pb at m{sub H} = 200 GeV. Assuming the presence of a fourth sequential generation of fermions with large masses, we exclude at the 95% Confidence Level a standard-model-like Higgs boson with a mass between 124 and 286 GeV.
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ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (727 download)
Download or read book Combined CDF and D0 Upper Limits on Standard Model Higgs-Boson Production with Up to 6.7 Fb$^{-1}$ of Data written by and published by . This book was released on 2010 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: We combine results from CDF and D0 on direct searches for the standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at (square root)s = 1.96 TeV. Compared to the previous Tevatron Higgs search combination more data have been added, additional new channels have been incorporated, and some previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg --> H theoretical cross sections when comparing our limits to the SM predictions. With up to 5.9 fb−1 of data analyzed at CDF, and up to 6.7 fb−1 at D0, the 95% C.L. upper limits on Higgs boson production are factors of 1.56 and 0.68 the values of the SM cross section for a Higgs boson mass of m{sub H} = 115 GeV/c2 and 165 GeV/c2. We exclude, at the 95% C.L., a new and larger region at high mass between 158
Download or read book Combined CDF and D0 Upper Limits on Standard Model Higgs Boson Production with Up to 8.2 Fb$^{-1}$ of Data written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We combine results from CDF and D0's direct searches for the standard model (SM) Higgs boson (H) produced in p{bar p} collisions at the Fermilab Tevatron at √s = 1.96 TeV. The results presented here include those channels which are most sensitive to Higgs bosons with mass between 130 and 200 GeV/c2, namely searches targeted at Higgs boson decays to W+W−, although acceptance for decays into [tau]{sup.
Download or read book Study of the Spin and Parity of the Higgs Boson in Diboson Decays with the ATLAS Detector written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of the spin, parity and tensor couplings of the Higgs boson in the H→ZZ*→4l, H→WW*→e[nu][mu][nu] and H→[gamma][gamma] decay processes at the LHC are presented. The investigations are based on 25fb-1 of pp collision data collected by the ATLAS experiment at √s=7 TeV and √s=8 TeV. The Standard Model (SM) Higgs boson hypothesis, corresponding to the quantum numbers JP=0+, is tested against several alternative spin scenarios, including non-SM spin-0 and spin-2 models with universal and non-universal couplings to fermions and vector bosons. All tested alternative models are excluded in favour of the SM Higgs boson hypothesis at more than 99.9 % confidence level. Using the H→ZZ*→4l and H→WW*→e[nu][mu][nu] decays, the tensor structure of the interaction between the spin-0 boson and the SM vector bosons is also investigated. The observed distributions of variables sensitive to the non SM tensor couplings are compatible with the SM predictions and constraints on the non SM couplings are derived.
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ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (873 download)
Download or read book Combined CDF and D0 Searches for the Standard Model Higgs Boson Decaying to Two Photons with Up to 8.2 Fb^-1 written by and published by . This book was released on 2011 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: We combine results from CDF and D0's direct searches for the standard model (SM) Higgs boson (H) produced in p{bar p} collisions at the Fermilab Tevatron at √s = 1.96 TeV, focusing on the decay H → [gamma][gamma]. We compute upper limits on the Higgs boson production cross section times the decay branching fraction in the range 100
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ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (727 download)
Download or read book Combined CDF and D0 Upper Limits on Standard Model Higgs-Boson Production with 2.1-5.4 Fb-1 of Data written by and published by . This book was released on 2009 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: We combine results from CDF and D0 on direct searches for a standard model (SM) Higgs boson (H) in p{bar p} collisions at the Fermilab Tevatron at (square root)s = 1.96 TeV. Compared to the previous Tevatron Higgs search combination more data have been added and some previously used channels have been reanalyzed to gain sensitivity. We use the latest parton distribution functions and gg --> H theoretical cross sections when comparing our limits to the SM predictions. With 2.0-4.8 fb−1 of data analyzed at CDF, and 2.1-5.4 fb−1 at D0, the 95% C.L. upper limits on Higgs boson production are a factor of 2.70 (0.94) times the SM cross section for a Higgs boson mass of m{sub H} = 115 (165) GeV/c2. The corresponding median upper limits expected in the absence of Higgs boson production are 1.78 (0.89). The mass range excluded at 95% C.L. for a SM Higgs is 163
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ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (16 download)
Download or read book Combination of Searches for the Higgs Boson Using the Full CDF Data Set written by and published by . This book was released on 2013 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Hall
Publisher : Springer
ISBN 13 : 3319199897
Total Pages : 175 pages
Book Rating : 4.3/5 (191 download)
Download or read book Discovery and Measurement of the Higgs Boson in the WW Decay Channel written by David Hall and published by Springer. This book was released on 2015-06-15 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the stand-alone discovery and measurement of the Higgs boson in its decays to two W bosons using the Run-I ATLAS dataset. This is the most precise measurement of gluon-fusion Higgs boson production and is among the most significant results attained at the LHC. The thesis provides an exceptionally clear exposition on a complicated analysis performed by a large team of researchers. Aspects of the analysis performed by the author are explained in detail; these include new methods for evaluating uncertainties on the jet binning used in the analysis and for estimating the background due to associated production of a W boson and an off-shell photon. The thesis also describes a measurement of the WW cross section, an essential background to Higgs boson production. The primary motivation of the LHC was to prove or disprove the existence of the Higgs boson. In 2012, CERN announced this discovery and the resultant ATLAS publication contained three decay channels: gg, ZZ, and WW.
Author : Nikolaos Karastathis
Publisher :
ISBN 13 : 9789036540537
Total Pages : 320 pages
Book Rating : 4.5/5 (45 download)
Download or read book Determination of the Spin and Parity of the Higgs Boson in the WW* -> Evμv Decay Channel with the Atlas Detector written by Nikolaos Karastathis and published by . This book was released on 2016 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Leon M. Lederman
Publisher : Houghton Mifflin Harcourt
ISBN 13 : 9780618711680
Total Pages : 452 pages
Book Rating : 4.7/5 (116 download)
Download or read book The God Particle written by Leon M. Lederman and published by Houghton Mifflin Harcourt. This book was released on 2006 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fascinating tour of particle physics from Nobel Prize winner Leon Lederman. At the root of particle physics is an invincible sense of curiosity. Leon Lederman embraces this spirit of inquiry as he moves from the Greeks' earliest scientific observations to Einstein and beyond to chart this unique arm of scientific study. His survey concludes with the Higgs boson, nicknamed the God Particle, which scientists hypothesize will help unlock the last secrets of the subatomic universe, quarks and all--it's the dogged pursuit of this almost mystical entity that inspires Lederman's witty and accessible history.
