Search For The Standard Model Higgs Boson In The Zh Mu Mu Bb Channel In Pp Collisions At Square Root Of S
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Search For The Standard Model Higgs Boson In The Zh Mu Mu Bb Channel In Pp Collisions At Square Root Of S
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Author : Huishi Dong
language : en
Publisher:
Release Date : 2007
Search For The Standard Model Higgs Boson In The Zh Mu Mu Bb Channel In Pp Collisions At Square Root Of S written by Huishi Dong and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Searches For Beyond Standard Model Higgs Bosons In Pp Collisions At Square Root Of S
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Author : Pedro H. Sales de Bruin
language : en
Publisher:
Release Date : 2016
Searches For Beyond Standard Model Higgs Bosons In Pp Collisions At Square Root Of S written by Pedro H. Sales de Bruin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Higgs bosons categories.
The searches for a Beyond Standard Model (BSM) heavy CP-odd Higgs boson A decaying to Zh in the context of two-Higgs-doublet models (2HDM), and Minimal Supersymmetric Standard Model (MSSM) neutral Higgs bosons H/A decaying to a tau pair are presented. The search for the heavy CP-odd Higgs boson, A, is conducted through the A -> Zh -> ll T[subscript]lep T[subscript]had decay channel using 20.3 fb−1 of proton-proton collision data collected by the ATLAS detector at a center-of-mass of 8 TeV. The search for the neutral MSSM H/A decaying to a tau pair in the T[subscript]lep T[subscript]had b-veto final state is done using 3.2 fb−1 of proton-proton collision data recorded by the ATLAS detector at a center-of-mass of 13 TeV. The observed data agrees with the Standard Model background prediction, and upper limits are set on cross-section times branching ratio of neutral BSM Higgs bosons.
Search For The Standard Model Higgs Boson In The Zh Vvbb Channel In 5 2 Fb 1 Of P Pbar Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2009
Search For The Standard Model Higgs Boson In The Zh Vvbb Channel In 5 2 Fb 1 Of P Pbar 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 2009 with categories.
A search is performed for the standard model Higgs boson in 5.2 fb−1 of p{bar p} collisions at √s = 1.96 TeV, collected with the D0 detector at the Fermilab Tevatron Collider. The final state considered is a pair of b jets and large missing transverse energy, as expected from p{bar p} → ZH → [nu]{bar [nu]}b{bar b} production. The search is also sensitive to the WH → l{nu}b{bar b} channel when the charged lepton is not identified. For a Higgs boson mass of 115 GeV, a limit is set at the 95% C.L. on the cross section multiplied by branching fraction for (p{bar p} → (Z/W)H) x (H → b{bar b}) that is a factor of 3.7 larger than the standard model value, consistent with the factor of 4.6 expected.
Measurement Of The Higgs Boson Produced In Association With A Z Boson And Decaying To Ww With A Leptonic Final State In Pp Collisions At Square Root S
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Author : Aaron Liblong
language : en
Publisher:
Release Date : 2019
Measurement Of The Higgs Boson Produced In Association With A Z Boson And Decaying To Ww With A Leptonic Final State In Pp Collisions At Square Root S written by Aaron Liblong 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.
An analysis of the Higgs boson produced in association with a $Z$ boson, with the Higgs decaying to $WW^\ast$ and the $W$ and $Z$ bosons decaying leptonically -- i.e. the $ZH \rightarrow ZWW^\ast \rightarrow \ell\ell\ell\nu\ell\nu$ process -- is presented, using the combined 2015 and 2016 datasets from the ATLAS experiment, totalling 36.1 fb$^{-1}$ of data from $pp$ collisions at $\sqrt{s}$ = 13 TeV. Control region normalisation and a data-driven technique are employed alongside Monte Carlo estimation to predict the number of signal and background events. A cut-based approach is used to discriminate signal events from background, with cut values optimised to maximise expected significance. A statistical fit of the data, including thorough treatment of sources of systematic uncertainty, is performed, yielding a signal strength of $\mu_{ZH} = 3.0^{+1.9}_{-1.4}$, where the Standard Model prediction is $\mu_{ZH} = 1$.
Search For Neutral Mssm Higgs Bosons Decaying To Mu Mu In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2015
Search For Neutral Mssm Higgs Bosons Decaying To Mu Mu 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 2015 with categories.
A search for neutral Higgs bosons predicted in the minimal supersymmetric standard model (MSSM) for [mu]+[mu]- decay channels is presented. Our analysis uses data collected by the CMS experiment at the LHC in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 5.1 and 19.3 fb-1, respectively. The search is sensitive to Higgs bosons produced either through the gluon fusion process or in association with a bb quark pair. No statistically significant excess is observed in the [mu]+[mu]- mass spectrum. Results are interpreted in the framework of several benchmark scenarios, and the data are used to set an upper limit on the MSSM parameter tan [beta] as a function of the mass of the pseudoscalar A boson in the range from 115 to 300 GeV. Furthermore, the model independent upper limits are given for the product of the cross section and branching fraction for gluon fusion and b quark associated production at √s = 8 TeV. As a result, they are the most stringent limits obtained to date in this channel.
Search For The Standard Model Higgs Boson In The Decay Channel H To Z Z To 4 Leptons In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2012
Search For The Standard Model Higgs Boson In The Decay Channel H To Z Z To 4 Leptons 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 2012 with categories.
A search for a Higgs boson in the four-lepton decay channel H to ZZ, with each Z boson decaying to an electron or muon pair, is reported. The search covers Higgs boson mass hypotheses in the range 110 mH
Search For A Higgs Boson In The Decay Channel H To Zz To Q Qbar Ell L In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2012
Search For A Higgs Boson In The Decay Channel H To Zz To Q Qbar Ell L 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 2012 with categories.
A search for the standard model Higgs boson decaying into two Z bosons with subsequent decay into a final state containing two quark jets and two leptons, H to ZZ(*) to q q-bar l-l+ is presented. Results are based on data corresponding to an integrated luminosity of 4.6 inverse femtobarns of proton-proton collisions at sqrt(s)=7 TeV, collected with the CMS detector at the LHC. In order to discriminate between signal and background events, kinematic and topological quantities, including the angular spin correlations of the decay products, are employed. Events are further classified according to the probability of the jets to originate from quarks of light or heavy flavor or from gluons. No evidence for the Higgs boson is found, and upper limits on its production cross section are determined for a Higgs boson of mass between 130 and 600 GeV.
Combined Results Of Searches For The Standard Model Higgs Boson In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2012
Combined Results Of Searches For The Standard Model 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 2012 with categories.
Combined results are reported from searches for the standard model Higgs boson in proton-proton collisions at sqrt(s)=7 TeV in five Higgs boson decay modes: gamma pair, b-quark pair, tau lepton pair, W pair, and Z pair. The explored Higgs boson mass range is 110-600 GeV. The analysed data correspond to an integrated luminosity of 4.6-4.8 inverse femtobarns. The expected excluded mass range in the absence of the standard model Higgs boson is 118-543 GeV at 95% CL. The observed results exclude the standard model Higgs boson in the mass range 127-600 GeV at 95% CL, and in the mass range 129-525 GeV at 99% CL. An excess of events above the expected standard model background is observed at the low end of the explored mass range making the observed limits weaker than expected in the absence of a signal. The largest excess, with a local significance of 3.1 sigma, is observed for a Higgs boson mass hypothesis of 124 GeV. The global significance of observing an excess with a local significance greater than 3.1 sigma anywhere in the search range 110-600 (110-145) GeV is estimated to be 1.5 sigma (2.1 sigma). More data are required to ascertain the origin of this excess.
Search For The Standard Model Higgs Boson In Zh U2192 V Bar V B Bar B Channel In P Bar P Collisions At U221a S
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Author :
language : en
Publisher:
Release Date : 2011
Search For The Standard Model Higgs Boson In Zh U2192 V Bar V B Bar B Channel In P Bar P Collisions At U221a 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 2011 with categories.
A search for the standard model Higgs boson is performed in 5.2 fb-1 of p$ar{p}$ collisions at p √s = 1.96 TeV, collected with the DØ detector at the Fermilab Tevatron. The final state considered is a pair of b jets with large missing transverse energy, as expected from p$ar{p}$→ ZH → v$ar{v}$b$ar{b}$ production. The search is also sensitive to the WH → lvb$ar{b}$ channel, where the charged lepton is not identified. Boosted decision trees are used to discriminate signal from background. Good agreement is observed between data and expected backgrounds, and, for a Higgs-boson mass of 115 GeV, a limit is set at 95% C.L. on the cross section multiplied by branching fraction of (p$ar{p}$ → (Z/W)H) × (H → b$ar{b}$) that is a factor 4.57 expected and 3.73 observed larger than the value expected from the standard model.
Search For A Cp Odd Higgs Boson Decaying To Z H In Pp Collisions At Square Root S
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Author : Hannah Arnold
language : en
Publisher:
Release Date : 2018
Search For A Cp Odd Higgs Boson Decaying To Z H In Pp Collisions At Square Root S written by Hannah Arnold 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.