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
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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
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Author : Vincent Kitali
language : en
Publisher:
Release Date : 2019
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
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
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Author : Vincent Kitali
language : en
Publisher:
Release Date : 2020
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Search For Invisible Decays Of The Higgs Boson Produced In Association With A Hadronically Decaying Vector Boson In Pp Collisions At Arrow
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Author :
language : en
Publisher:
Release Date : 2015
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
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
Search For Invisible Decays Of The Higgs Boson Produced Via Vector Boson Fusion At The Atlas Detector With 139 Fb 1 Of Integrated Luminosity
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Author : Pablo Andres Rivadeneira Bracho
language : en
Publisher:
Release Date : 2022
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
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
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Author : [Study Group] ATLAS Collaboration CERN
language : en
Publisher:
Release Date : 2022
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 has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with categories.
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
Search For Invisible Decays Of Higgs Bosons In The Vector Boson Fusion And Associated Zh Production Modes
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Author :
language : en
Publisher:
Release Date : 2014
Search For Invisible Decays Of Higgs Bosons In The Vector Boson Fusion And Associated Zh Production Modes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
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.
A Search For Nothing
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Author : William Balunas
language : en
Publisher:
Release Date : 2018
A Search For Nothing written by William Balunas and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
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.
Searches For Invisible Decays Of The Higgs Boson In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2016
Searches For Invisible Decays Of The Higgs Boson In Pp 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 2016 with categories.
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.
Search For Higgs To Invisible Decays In Vector Boson Fusion Production
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Author : Patricia Zoila Dominguez
language : en
Publisher:
Release Date : 2017
Search For Higgs To Invisible Decays In Vector Boson Fusion Production written by Patricia Zoila Dominguez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
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
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Author :
language : en
Publisher:
Release Date : 1980
written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.