Same Sign WW Scattering Process as a Probe of Higgs Boson in pp Collision at $\sqrt{s}=10$TeV

WW scattering is an important process to study electroweak symmetry breaking in the Standard Model at LHC, in which the Higgs mechanism or other new physics processes must intervene to preserve the unitarity of the process below 1TeV. This channel is expected to be one of the most sensitive to deter...

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Detalles Bibliográficos
Autores principales: Zhu, Bo, Govoni, Pietro, Mao, Yajun, Mariotti, Chiara, Wu, Weimin
Lenguaje:eng
Publicado: 2010
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1140/epjc/s10052-010-1514-0
http://cds.cern.ch/record/1303400
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author Zhu, Bo
Govoni, Pietro
Mao, Yajun
Mariotti, Chiara
Wu, Weimin
author_facet Zhu, Bo
Govoni, Pietro
Mao, Yajun
Mariotti, Chiara
Wu, Weimin
author_sort Zhu, Bo
collection CERN
description WW scattering is an important process to study electroweak symmetry breaking in the Standard Model at LHC, in which the Higgs mechanism or other new physics processes must intervene to preserve the unitarity of the process below 1TeV. This channel is expected to be one of the most sensitive to determine whether the Higgs boson exists. In this paper, the final state with two same sign Ws is studied, with a simulated sample corresponding to the integrated luminosity of 60fb$^{-1}$ in pp collision at $\sqrt{s}=$10TeV. Two observables, the invariant mass of $\mu\mu$ from Ws decay and the azimuthal angle difference $(\Delta\phi)$ between the two $\mu$s, are utilized to distinguish the Higgs boson existence scenario from the Higgs boson absence scenario. A result with significance $\alpha=0.36$ in discriminating between the two scenarios can be achieved.
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spelling cern-13034002023-03-14T17:34:42Zdoi:10.1140/epjc/s10052-010-1514-0http://cds.cern.ch/record/1303400engZhu, BoGovoni, PietroMao, YajunMariotti, ChiaraWu, WeiminSame Sign WW Scattering Process as a Probe of Higgs Boson in pp Collision at $\sqrt{s}=10$TeVParticle Physics - ExperimentWW scattering is an important process to study electroweak symmetry breaking in the Standard Model at LHC, in which the Higgs mechanism or other new physics processes must intervene to preserve the unitarity of the process below 1TeV. This channel is expected to be one of the most sensitive to determine whether the Higgs boson exists. In this paper, the final state with two same sign Ws is studied, with a simulated sample corresponding to the integrated luminosity of 60fb$^{-1}$ in pp collision at $\sqrt{s}=$10TeV. Two observables, the invariant mass of $\mu\mu$ from Ws decay and the azimuthal angle difference $(\Delta\phi)$ between the two $\mu$s, are utilized to distinguish the Higgs boson existence scenario from the Higgs boson absence scenario. A result with significance $\alpha=0.36$ in discriminating between the two scenarios can be achieved.WW scattering is an important process to study electroweak symmetry breaking in the Standard Model at the LHC, in which the Higgs mechanism or other new physics processes must intervene to preserve the unitarity of the process below 1 TeV. This channel is expected to be one of the most sensitive to determine whether the Higgs boson exists. In this paper, the final state with two same sign Ws is studied, with a simulated sample corresponding to the integrated luminosity of 60 fb$^{-1}$ in pp collision at $\sqrt{s}=$10 TeV. Two observables, the invariant mass of $\mu\mu$ from W decays and the azimuthal angle difference between the two $\mu$s, are utilized to distinguish the Higgs boson existence scenario from the Higgs boson absence scenario. A good signal significance for the two cases can be achieved. If we define the separation power of the analysis as the distance, in the log-likelihood plane, of pseudo-experiments outcomes in the two cases, with the total statistics expected from the ATLAS and CMS experiments at the nominal centre-of-mass energy of 14 TeV, the separation power will be at the level of 4 $\sigma$.arXiv:1010.5848oai:cds.cern.ch:13034002010-10-29
spellingShingle Particle Physics - Experiment
Zhu, Bo
Govoni, Pietro
Mao, Yajun
Mariotti, Chiara
Wu, Weimin
Same Sign WW Scattering Process as a Probe of Higgs Boson in pp Collision at $\sqrt{s}=10$TeV
title Same Sign WW Scattering Process as a Probe of Higgs Boson in pp Collision at $\sqrt{s}=10$TeV
title_full Same Sign WW Scattering Process as a Probe of Higgs Boson in pp Collision at $\sqrt{s}=10$TeV
title_fullStr Same Sign WW Scattering Process as a Probe of Higgs Boson in pp Collision at $\sqrt{s}=10$TeV
title_full_unstemmed Same Sign WW Scattering Process as a Probe of Higgs Boson in pp Collision at $\sqrt{s}=10$TeV
title_short Same Sign WW Scattering Process as a Probe of Higgs Boson in pp Collision at $\sqrt{s}=10$TeV
title_sort same sign ww scattering process as a probe of higgs boson in pp collision at $\sqrt{s}=10$tev
topic Particle Physics - Experiment
url https://dx.doi.org/10.1140/epjc/s10052-010-1514-0
http://cds.cern.ch/record/1303400
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