Influence of anomalous VVH and VVHH on determination of Higgs self couplings at ILC

Abstract

The recent discovery of a Higgs boson at LHC, while establishing the Higgs mechanism as the way of electroweak symmetry breaking, started an era of precision measurements involving the Higgs boson. In an effective Lagrangian framework, we consider the e+e- --> ZHH process, at an ILC running at a centre of mass energy of 800 GeV to investigate the effect of the ZZH and ZZHH couplings on the sensitivity of HHH coupling on this process. Our results show that the sensitivity of the trilinear Higgs self couplings on this process has somewhat strong dependence on the Higgs-gauge boson couplings. Single and two parameter reach of ILC with integrated luminosity of 1000 /fb are obtained on the effective couplings, c6 and cH, which are related to the HHH couplings, indicating how these limits are affected by the presence of anomalous ZZH and ZZHH couplings. The kinematic distributions studied to understand the effect of the anomalous couplings, again, show strong influence of Z-H couplings on the dependence of these distributions on HHH coupling. Similar results are indicated in the case of the process, e+e- --> nu nu HH, considered at a centre of mass energy of 2 TeV, where the cross section is large enough. The effect of WWH and WWHH couplings on the sensitivity of HHH coupling is clearely established through our analyses of this process.

arXiv comment17 pages, 11 figures, references added

References in corpus (25)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson with mass near 125 GeV in pp collisions at sqrt(s) = 7 and 8 TeV
• Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
• The Electroweak Fit of the Standard Model after the Discovery of a New Boson at the LHC
• Robust Determination of the Higgs Couplings: Power to the Data
• Complete Higgs Sector Constraints on Dimension-6 Operators
• Constraining anomalous Higgs interactions
• Tasi 2009 lectures: The Higgs as a Composite Nambu-Goldstone Boson
• ILC Reference Design Report Volume 1 - Executive Summary
• The Bases of Effective Field Theories
• Vices and Virtues of Higgs EFTs at Large Energy
• Limits on Anomalous Couplings of the Higgs to Electroweak Gauge Bosons from LEP and LHC
• An Effective Guide to Beyond the Standard Model Physics
• An effective gauge-Higgs operators analysis of new physics associated with the Higgs
• BSM Primary Effects
• Angular distributions as a probe of anomalous ZZH and gammaZH interactions at a linear collider with polarized beams
• Learning what the Higgs boson is mixed with
• Model-independent analysis of Higgs spin and CP properties in the process $e^{+}{e}^{-}\to t\bar{t}\Phi$
• The Triple Higgs Boson Self-Coupling at Future Linear e+e- Colliders Energies: ILC and CLIC
• Effective Higgs Lagrangian and Constraints on Higgs Couplings
• Decay-lepton correlations as probes of anomalous ZZH and gammaZH interactions in e+e- --> ZH with polarized beams
• Probing the indefinite CP nature of the Higgs Boson through decay distributions in the process $e^{+}{e}^{-}\to t\bar{t}\Phi$
• Top Yukawa coupling measurement with indefinite CP Higgs in $e^{+}{e}^{-}\to t\bar{t}\Phi$
• Study of Higgs Self-coupling at ILC
• LHC results and prospects: Beyond Standard Model

Cited by in corpus (3)

• Contact Interactions in Higgs-Vector Boson Associated Production at the ILC
• Investigating Unitarity in Presence of Anomalous Couplings
• Study of Higgs-gauge boson anomalous couplings through $e^{-}{e}^{+}\to W^{-}{W}^{+}H$ at ILC