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Search For Higgs Boson Production In Proton Antiproton Collisions At U221as
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Book Synopsis Search for Higgs Boson Production in Proton-antiproton Collisions at [square Root Of] S by : Yoshiaki Kusakabe
Download or read book Search for Higgs Boson Production in Proton-antiproton Collisions at [square Root Of] S written by Yoshiaki Kusakabe and published by . This book was released on 2006 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book การผลิตโซเดียมคลอไรด์ written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for a High-Mass Higgs Boson Produced in Proton Anti-Proton Collisions at $\sqrt{s} by :
Download or read book Search for a High-Mass Higgs Boson Produced in Proton Anti-Proton Collisions at $\sqrt{s} written by and published by . This book was released on 2011 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this Thesis a search for Higgs boson production has been performed analysing data gathered by the Collider Detector at Fermilab (CDF) from proton-antiproton (p$\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.
Book Synopsis Search for the Higgs Boson Using High-pT Isolated Like-Sign Dil Events in 1.96-TeV Proton-Antiproton Collisions by :
Download or read book Search for the Higgs Boson Using High-pT Isolated Like-Sign Dil Events in 1.96-TeV Proton-Antiproton Collisions written by and published by . This book was released on 2005 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our physics objective is to search for the neutral on using events containing a like-sign dilepton pair in the following reaction: q{bar q} 2!W{sup {+-}} H 2!W{sup {+-}} W*W* 2!l{sup {+-}}l{sup {+-}} + X. The relevant Higgs boson mass region is above 160 GeV/c2 for the Standard Model Higgs boson where the branching fraction of H 2!W*W* supersedes that of H 2!b{bar b}. The search for this signature in the region at low mass (less than 135 GeV/c2) is, however, still important because we need to investigate various Higgs boson couplings as an essential test to convince that signals are attributed to the Higgs boson production. This channel also covers the case beyond the Standard Model that the Higgs boson couples only to the gauge bosons, which is referred to as the bosophilic or fermiophobic Higgs boson. The corresponding mass region suitable to our signature is above 110 GeV/c2 where the branching fraction of H 2![gamma][gamma] is overtaken by this channel. On the experimental side, the like-sign dilepton event is one of the cleanest signature in hadron collisions. This analysis exploiting such a distinctive signature is therefore expected to have a high potential of the sensitivity for the search of the Higgs boson. The data were collected with the CDF II detector between March 2002 and September 2003, corresponding to an integrated luminosity of 193.5 pb−1. At off-line, the central region).
Book Synopsis Search for a Massive Resonance Decaying Into a Higgs Boson and a W Or Z Boson in Hadronic Final States in Proton-proton Collisions at {u221A}s by :
Download or read book Search for a Massive Resonance Decaying Into a Higgs Boson and a W Or Z Boson in Hadronic Final States in Proton-proton Collisions at {u221A}s written by and published by . This book was released on 2015 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for a massive resonance decaying into a standard-model-like Higgs boson (H) and a W or Z boson is reported. The analysis is performed on a data sample corresponding to an integrated luminosity of 19.7 fb–1, collected in proton-proton collisions at a centre-of-mass energy of 8 TeV with the CMS detector at the LHC. Signal events, in which the decay products of Higgs, W, or Z bosons at high Lorentz boost are contained within single reconstructed jets, are identified using jet substructure techniques, including the tagging of b hadrons. This is the first search for heavy resonances decaying in HW or HZ resulting in an all-jet final state, as well as the first application of jet substructure techniques to identify H → WW* → 4q decays at high Lorentz boost. Furthermore, no significant signal is observed and limits are set at 95% confidence level on the production cross section of W' and Z' in a model with mass-degenerate charged and neutral spin-1 resonances.
Book Synopsis Search for Standard Model Higgs Boson Produced in Association with a Top Anti-top Quark Pair in 1.96 TeV Proton - Anti-proton Collisions by :
Download or read book Search for Standard Model Higgs Boson Produced in Association with a Top Anti-top Quark Pair in 1.96 TeV Proton - Anti-proton Collisions written by and published by . This book was released on 2006 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis First Search at CDF for the Higgs Boson Decaying to a W-boson Pair in Proton-antiproton Collisions at the Center-of-mass Energy of 1.96 TeV. by : Shan-Huei S. Chuang
Download or read book First Search at CDF for the Higgs Boson Decaying to a W-boson Pair in Proton-antiproton Collisions at the Center-of-mass Energy of 1.96 TeV. written by Shan-Huei S. Chuang and published by . This book was released on 2006 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: By way of retaining the gauge invariance of the Standard Model (SM) and giving masses to the W{sup {+-}} and Z{sup 0} bosons and the fermions, the Higgs mechanism predicts the existence of a neutral scalar bosonic particle, whose mass is not exactly known. The Higgs boson is the only experimentally unconfirmed SM particle to date. This thesis documents a search for the Higgs boson in p{bar p} collisions at {radical}s = 1.96 TeV at the Tevatron, using 360 {+-} pb {sup -1} data collected by the Run II Collider Detector at Fermilab (CDF II), as part of the most important quest for contemporary particle physicists. The search was for a Higgs boson decaying to a pair of W{sup {+-}} bosons, where each W boson decays to an electron, a muon or a tau that further decays to an electron or a muon with associated neutrinos. Events with two charged leptons plus large missing energy were selected in data triggered on a high p{sub t} lepton and compared to the signal and backgrounds modeled using Monte Carlo and jet data. No signal-like excess was observed in data. Therefore, upper limits on the HWW production cross-section in the analyzed mass range were extracted using the binned likelihood maximum from distributions of dilepton azimuthal angle at 95% Bayesian credibility level (CL), as shown in the table below.
Book Synopsis Search for Associated Higgs Boson Production Using Like Charge Dilepton Events in P P Collisions at {u221A}s by :
Download or read book Search for Associated Higgs Boson Production Using Like Charge Dilepton Events in P P Collisions at {u221A}s written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a search for associated Higgs boson production in the process pp→ W/ZH → ell± ell± + X in ee, e?, and ?? final states. The search is based on data collected by the D0 experiment at the Fermilab Tevatron Collider at √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.
Book Synopsis Measurements of Higgs Boson Properties in Proton-Proton Collisions at √s =7, 8 and 13 TeV at the CERN Large Hadron Collider by : Ulascan Sarica
Download or read book Measurements of Higgs Boson Properties in Proton-Proton Collisions at √s =7, 8 and 13 TeV at the CERN Large Hadron Collider written by Ulascan Sarica and published by Springer Nature. This book was released on 2019-09-26 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis documents the measurement of lifetime, width, mass, and couplings to two electroweak bosons of the recently-discovered Higgs boson using data from the CMS experiment at the Large Hadron Collider. Both on-shell (at the mass of around 125 GeV) and off-shell (above 200 GeV) Higgs boson production is studied and an excess of off-shell production with significance above two standard deviations is observed for the first time. The latter is a qualitative new way to study the Higgs field, responsible for generation of mass of all the known elementary particles. In addition, phenomenological tools have been developed with the Monte Carlo event generator and matrix element techniques for an optional analysis of LHC data. Optimization of the CMS data with careful alignment of the silicon tracker is also presented.
Book Synopsis Searches for a High Mass Higgs Boson Produced in $p\bar{p}$ Collisions at $\sqrt{s} by :
Download or read book Searches for a High Mass Higgs Boson Produced in $p\bar{p}$ Collisions at $\sqrt{s} written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this Thesis the electro-weak spontaneous symmetry breaking of the Standard Model (SM) is studied by searching for the scalar Higgs particle in the proton antiproton collisions of the Tevatron collider, at the center of mass energy √s = 1.96 TeV. We report on the inclusive search for the Higgs boson decaying to two W bosons in the final state characterized by two charged leptons (e or [mu]) and two neutrinos. The analysis of 4.8 fb$^{-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.
Book Synopsis Search for Higgs Boson Off-shell Production in Proton-proton Collisions at 7 and 8 TeV and Derivation of Constraints on Its Total Decay Width by :
Download or read book Search for Higgs Boson Off-shell Production in Proton-proton Collisions at 7 and 8 TeV and Derivation of Constraints on Its Total Decay Width written by and published by . This book was released on 2016 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search is presented for the Higgs boson off-shell production in gluon fusion and vector boson fusion processes with the Higgs boson decaying into a WW pair and the W bosons decaying leptonically. The data observed in this analysis are used to constrain the Higgs boson total decay width. The analysis is based on the data collected by the CMS experiment at the LHC, corresponding to integrated luminosities of 4.9 inverse femtobarns at a centre-of-mass energy of 7 TeV and 19.4 inverse femtobarns at 8 TeV, respectively. An observed (expected) upper limit on the off-shell Higgs boson event yield normalised to the standard model prediction of 2.4 (6.2) is obtained at the 95% CL for the gluon fusion process and of 19.3 (34.4) for the vector boson fusion process. Observed and expected limits on the total width of 26 and 66 MeV are found, respectively, at the 95% confidence level (CL). These limits are combined with the previous result in the ZZ channel leading to observed and expected 95% CL upper limits on the width of 13 and 26 MeV, respectively.
Book Synopsis Search for Associated Production of Z and Higgs Bosons on Proton-antiproton Collisions at 1.96 TeV by : John Alexander BackusMayes
Download or read book Search for Associated Production of Z and Higgs Bosons on Proton-antiproton Collisions at 1.96 TeV written by John Alexander BackusMayes and published by . This book was released on 2010 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for a Charged Higgs Boson Produced in the Vector-boson Fusion Mode with Decay H± {u2192} W±Z Using pp Collisions at {u221A}s by :
Download or read book Search for a Charged Higgs Boson Produced in the Vector-boson Fusion Mode with Decay H± {u2192} W±Z Using pp Collisions at {u221A}s written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for a charged Higgs boson, H±, decaying to a W± boson and a Z boson is presented. The search is based on 20.3 fb–1 of proton-proton collision data at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. The H± boson is assumed to be produced via vector-boson fusion and the decays W± → qq¯' and Z → e+e–/?+?– are considered. The search is performed in a range of charged Higgs boson masses from 200 to 1000 GeV. No evidence for the production of an H± boson is observed. Upper limits of 31–1020 fb at 95% C.L. are placed on the cross section for vector-boson fusion production of an H± boson times its branching fraction to W±Z. The limits are compared with predictions from the Georgi-Machacek Higgs triplet model.
Book Synopsis Search for the Standard Model Higgs Boson in the Z Boson-H Boson Decaying to Positive Muon-negative Muon and Bottom-anti-bottom Quark Channel in Proton-antiproton Collisions at the Center of Mass Energy by :
Download or read book Search for the Standard Model Higgs Boson in the Z Boson-H Boson Decaying to Positive Muon-negative Muon and Bottom-anti-bottom Quark Channel in Proton-antiproton Collisions at the Center of Mass Energy written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Search for the standard model Higgs boson in the Z boson-H boson decaying to positive muon-negative muon and bottom-anti-bottom quark channel in proton-antiproton collisions at the center of mass energy = 1.96 TeV.
Book Synopsis Search for the Standard Model Higgs Boson in Missing Transverse Energy and B-quark Final States Using Proton-antiproton Collisions at 1.96 TeV by : Tyler McMillan Dorland
Download or read book Search for the Standard Model Higgs Boson in Missing Transverse Energy and B-quark Final States Using Proton-antiproton Collisions at 1.96 TeV written by Tyler McMillan Dorland and published by . This book was released on 2011 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for the Minimally Supersymmetric Higgs Boson in B-quark and Tau-lepton Final States Using Proton-antiproton Collisions at 1.96 TeV by : Sarah Schlobohm
Download or read book A Search for the Minimally Supersymmetric Higgs Boson in B-quark and Tau-lepton Final States Using Proton-antiproton Collisions at 1.96 TeV written by Sarah Schlobohm and published by . This book was released on 2011 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Aspects of High-Energy Proton-Proton Collisions by : A. Ali
Download or read book New Aspects of High-Energy Proton-Proton Collisions written by A. Ali and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Articles focus on the planned European proton-proton collider, and concentrate on physics issues, rather than the more technical concerns addressed in the three previous workshops. The use of energies much higher than those of the American Superconducting Super Collider is featured. Topics include reviews of current projects, hadron collisions, lep
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