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Search For Higgs To Invisible Decays In Vector Boson Fusion Production
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Book Synopsis Search for Higgs to Invisible Decays in Vector Boson Fusion Production by : Patricia Zoila Dominguez
Download or read book Search for Higgs to Invisible Decays in Vector Boson Fusion Production written by Patricia Zoila Dominguez and published by . This book was released on 2017 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for invisibly decaying Higgs bosons is performed using the vector boson fusion production (VBF) mode. This search was conducted using Run 2 data, collected by the CMS detector at the LHC in 2016 at a center of mass energy of 13 TeV, corresponding to an integrated luminosity of 5.9 fb-1. The control regions for the signal, invisibly decaying VBF Higgs bosons, are estimated using a cut-based selection strategy adapted from prior analyses. Selection criteria for the signal is applied as well. Assuming standard model Higgs boson cross sections and acceptances, the observed (expected) upper limit on the signal strength of VBF Higgs bosons invisibly decaying at mH = 125 GeV is found to be r
Book Synopsis Search for Invisible Higgs-boson Decays in Events with Vector-boson Fusion Signatures Using 139 Fb−1 of Proton-proton Data Recorded by the ATLAS Experiment by : [Study Group] ATLAS Collaboration CERN
Download or read book Search for Invisible Higgs-boson Decays in Events with Vector-boson Fusion Signatures Using 139 Fb−1 of Proton-proton Data Recorded by the ATLAS Experiment written by [Study Group] ATLAS Collaboration CERN and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: A direct search for Higgs bosons produced via vector-boson fusion and subsequently decaying into invisible particles is reported. The analysis uses 139 fb−1 of pp collision data at a centre-of-mass energy of s√ = 13 TeV recorded by the ATLAS detector at the LHC. The observed numbers of events are found to be in agreement with the background expectation from Standard Model processes. For a scalar Higgs boson with a mass of 125 GeV and a Standard Model production cross section, an observed upper limit of 0.145 is placed on the branching fraction of its decay into invisible particles at 95% confidence level, with an expected limit of 0.103. These results are interpreted in the context of models where the Higgs boson acts as a portal to dark matter, and limits are set on the scattering cross section of weakly interacting massive particles and nucleons. Invisible decays of additional scalar bosons with masses from 50 GeV to 2 TeV are also studied, and the derived upper limits on the cross section times branching fraction decrease with increasing mass from 1.0 pb for a scalar boson mass of 50 GeV to 0.1 pb at a mass of 2 TeV
Book Synopsis Search for Invisible Decays of Higgs Bosons in the Vector Boson Fusion and Associated ZH Production Modes by :
Download or read book Search for Invisible Decays of Higgs Bosons in the Vector Boson Fusion and Associated ZH Production Modes written by and published by . This book was released on 2014 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for invisible decays of Higgs bosons is performed using the vector boson fusion and associated ZH production modes. In the ZH mode, the Z boson is required to decay to a pair of charged leptons or a b b-bar quark pair. The searches use the 8 TeV pp collision dataset collected by the CMS detector at the LHC, corresponding to an integrated luminosity of up to 19.7 inverse femtobarns. Certain channels include data from 7 TeV collisions corresponding to an integrated luminosity of 4.9 inverse femtobarns. The searches are sensitive to non-standard-model invisible decays of the recently observed Higgs boson, as well as additional Higgs bosons with similar production modes and large invisible branching fractions. In all channels, the observed data are consistent with the expected standard model backgrounds. Limits are set on the production cross section times invisible branching fraction, as a function of the Higgs boson mass, for the vector boson fusion and ZH production modes. By combining all channels, and assuming standard model Higgs boson cross sections and acceptances, the observed (expected) upper limit on the invisible branching fraction at m[H] = 125 GeV is found to be 0.58 (0.44) at 95% confidence level. We interpret this limit in terms of a Higgs-portal model of dark matter interactions.
Book Synopsis Search for Invisible Decays of the Higgs Boson Produced Via Vector Boson Fusion at the ATLAS Detector with 139 Fb-1 of Integrated Luminosity by : Pablo Andres Rivadeneira Bracho
Download or read book Search for Invisible Decays of the Higgs Boson Produced Via Vector Boson Fusion at the ATLAS Detector with 139 Fb-1 of Integrated Luminosity written by Pablo Andres Rivadeneira Bracho and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Invisible Decays of the Higgs Boson Produced in Vector-boson Fusion in Final States with Jets and Large Missing Transverse Energy with the ATLAS Detector by : Vincent Kitali
Download or read book Search for Invisible Decays of the Higgs Boson Produced in Vector-boson Fusion in Final States with Jets and Large Missing Transverse Energy with the ATLAS Detector written by Vincent Kitali and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Invisible Decays of a Higgs Boson Produced Through Vector Boson Fusion in Proton-proton Collisions at √s by : Albert M. Sirunyan
Download or read book Search for Invisible Decays of a Higgs Boson Produced Through Vector Boson Fusion in Proton-proton Collisions at √s written by Albert M. Sirunyan and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Invisible Decays of the Higgs Boson Produced Via Vector Boson Fusion at the ATLAS Detector with 139 Fb-1 of Integrated Luminosity by : Pablo Andres Rivadeneira Bracho
Download or read book Search for Invisible Decays of the Higgs Boson Produced Via Vector Boson Fusion at the ATLAS Detector with 139 Fb-1 of Integrated Luminosity written by Pablo Andres Rivadeneira Bracho and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Searches for Invisible Decays of the Higgs Boson in Pp Collisions at $\sqrt{s}$ by :
Download or read book Searches for Invisible Decays of the Higgs Boson in Pp Collisions at $\sqrt{s}$ written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Searches for invisible decays of the Higgs boson are presented. The data collected with the CMS detector at the LHC correspond to integrated luminosities of 5.1, 19.7, and 2.3 inverse femtobarns at centre-of-mass energies of 7, 8, and 13 TeV, respectively. The search channels target Higgs boson production via gluon fusion, vector boson fusion, and in association with a vector boson. Upper limits are placed on the branching fraction of the Higgs boson decay to invisible particles, as a function of the assumed production cross sections. The combination of all channels, assuming standard model production, yields an observed (expected) upper limit on the invisible branching fraction of 0.24 (0.23) at the 95% confidence level. The results are also interpreted in the context of Higgs-portal dark matter models.
Book Synopsis Search for Invisible Decay of Heavy Higgs Bosons Produced Through Vector Boson Fusion by : Darshan Chalise
Download or read book Search for Invisible Decay of Heavy Higgs Bosons Produced Through Vector Boson Fusion written by Darshan Chalise and published by . This book was released on 2018 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Constraints on New Phenomena Via Higgs Boson Couplings and Invisible Decays with the ATLAS Detector by :
Download or read book Constraints on New Phenomena Via Higgs Boson Couplings and Invisible Decays with the ATLAS Detector written by and published by . This book was released on 2015 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ATLAS experiment at the LHC has measured the Higgs boson couplings and mass, and searched for invisible Higgs boson decays, using multiple production and decay channels with up to 4.7 fb-1 of pp collision data at √s=7 TeV and 20.3 fb-1 at √s=8 TeV. In the current study, the measured production and decay rates of the observed Higgs boson in the [gamma][gamma], ZZ, W W , Z[gamma], bb, [tau] [tau] , and [mu][mu] decay channels, along with results from the associated production of a Higgs boson with a top-quark pair, are used to probe the scaling of the couplings with mass. The limits are set on parameters in extensions of the Standard Model including a composite Higgs boson, an additional electroweak singlet, and two-Higgs-doublet models. Together with the measured mass of the scalar Higgs boson in the [gamma][gamma] and ZZ decay modes, a lower limit is set on the pseudoscalar Higgs boson mass of mA > 370 GeV in the "hMSSM" simplified Minimal Supersymmetric Standard Model. Results from direct searches for heavy Higgs bosons are also interpreted in the hMSSM. Finally, direct searches for invisible Higgs boson decays in the vector-boson fusion and associated production of a Higgs boson with W/Z (Z → ll, W/Z → jj) modes are statistically combined to set an upper limit on the Higgs boson invisible branching ratio of 0.25. As a result, the use of the measured visible decay rates in a more general coupling fit improves the upper limit to 0.23, constraining a Higgs portal model of dark matter.
Book Synopsis Search for Invisible Decays of the Higgs Boson Produced Invector-boson Fusion in Final States with Jets and Large Missingtransverse Energy with the ATLAS Detector by : Vincent Kitali
Download or read book Search for Invisible Decays of the Higgs Boson Produced Invector-boson Fusion in Final States with Jets and Large Missingtransverse Energy with the ATLAS Detector written by Vincent Kitali and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Search for Nothing by : William Balunas
Download or read book A Search for Nothing written by William Balunas and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents a search for invisible decays of the Higgs boson using the vector boson fusion channel. This uses 36 fb-1 of proton-proton collision data at [square root] s = 13 TeV using the ATLAS detector at the Large Hadron Collider. The experimental methods for understanding the signal and background processes as well as detector effects are described in detail. The search is carried out in several regions defined by kinematic requirements on the final-state objects, and the observed event yields are used in a profile-likelihood fit in order to constrain the backgrounds. The results are interpreted using a modified frequentist method and are found to be consistent with the Standard Model expectations. An upper limit of 34% (28% expected) at 95% C.L. is placed on the invisible branching ratio of the Higgs boson. Re-interpretation of these results in terms of dark matter is also discussed, in the context of the Higgs portal and other simplified models.
Book Synopsis Search for the Higgs Boson in the Vector Boson Fusion Channel at the ATLAS Detector by : Eric Ouellette
Download or read book Search for the Higgs Boson in the Vector Boson Fusion Channel at the ATLAS Detector written by Eric Ouellette and published by Springer. This book was released on 2015-02-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Optimizing the Search for Invisible Higgs Decays in Vector Boson Fusion$fOptimierung Der Suche Nach Unsichtbaren Zerfällen Des Higgs-Bosons in Vektor Boson Fusion by : Janik von Ahnen
Download or read book Optimizing the Search for Invisible Higgs Decays in Vector Boson Fusion$fOptimierung Der Suche Nach Unsichtbaren Zerfällen Des Higgs-Bosons in Vektor Boson Fusion written by Janik von Ahnen and published by . This book was released on 2019 with total page 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.
Download or read book رحلة الى الدار الآخرة written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Invisible Decays of the Higgs Boson Produced in Association with a Hadronically Decaying Vector Boson in Pp Collisions at [arrow]" by :
Download or read book Search for Invisible Decays of the Higgs Boson Produced in Association with a Hadronically Decaying Vector Boson in Pp Collisions at [arrow]" 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 Higgs boson decays to invisible particles is performed using 20.3 fb−1 of pp collision data at a centre-of-mass energy of 8 TeV recorded by the ATLAS detector at the Large Hadron Collider. The process considered is Higgs boson production in association with a vector boson (V = W or Z) that decays hadronically, resulting in events with two or more jets and large missing transverse momentum. No excess of candidates is observed in the data over the background expectation. The results are used to constrain V H production followed by H decaying to invisible particles for the Higgs boson mass range 115
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