Constraints from triple gauge couplings on vectorlike leptons

Bertuzzo, Enrico; Machado, Pedro A. N.; Perez-Gonzalez, Yuber F.; Funchal, Renata Zukanovich

doi:10.1103/PhysRevD.96.035035

Title: Constraints from triple gauge couplings on vectorlike leptons

Abstract

Here, we study the contributions of colorless vectorlike fermions to the triple gauge couplings W⁺W^-γ and W⁺W^-Z⁰. We consider models in which their coupling to the Standard Model Higgs boson is allowed or forbidden by quantum numbers. We assess the sensitivity of the future accelerators FCC-ee, ILC, and CLIC to the parameters of these models, assuming they will be able to constrain the anomalous triple gauge couplings with precision δ_κV~O(10^-4), V = γ,Z⁰. We show that the combination of measurements at different center-of-mass energies helps to improve the sensitivity to the contribution of vectorlike fermions, in particular when they couple to the Higgs. In fact, the measurements at the FCC-ee and, especially, the ILC and the CLIC, may turn the triple gauge couplings into a new set of precision parameters able to constrain the models better than the oblique parameters or the H → γγ decay, even assuming the considerable improvement of the latter measurements achievable at the new machines.

Authors:

^[1];

^[2];

^[1];

^[1]

Univ. de Sao Paulo, Sao Paulo (Brazil)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Publication Date:: Wed Aug 30 00:00:00 EDT 2017

Research Org.:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1452788

Alternate Identifier(s):: OSTI ID: 1377662

Report Number(s):: FERMILAB-PUB-17-190-T; arXiv:1706.03073
Journal ID: ISSN 2470-0010; PRVDAQ; 1604283; TRN: US1900983

Grant/Contract Number:: AC02-07CH11359

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review D

Additional Journal Information:: Journal Volume: 96; Journal Issue: 3; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Bertuzzo, Enrico, Machado, Pedro A. N., Perez-Gonzalez, Yuber F., and Funchal, Renata Zukanovich. Constraints from triple gauge couplings on vectorlike leptons.  United States: N. p., 2017. 
Web.  doi:10.1103/PhysRevD.96.035035.

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                    Bertuzzo, Enrico, Machado, Pedro A. N., Perez-Gonzalez, Yuber F., & Funchal, Renata Zukanovich. Constraints from triple gauge couplings on vectorlike leptons.  United States.  https://doi.org/10.1103/PhysRevD.96.035035

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                    Bertuzzo, Enrico, Machado, Pedro A. N., Perez-Gonzalez, Yuber F., and Funchal, Renata Zukanovich. Wed .  
"Constraints from triple gauge couplings on vectorlike leptons".  United States.  https://doi.org/10.1103/PhysRevD.96.035035.  https://www.osti.gov/servlets/purl/1452788.

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@article{osti_1452788,

  title        = {Constraints from triple gauge couplings on vectorlike leptons},

  author       = {Bertuzzo, Enrico and Machado, Pedro A. N. and Perez-Gonzalez, Yuber F. and Funchal, Renata Zukanovich},

  abstractNote = {Here, we study the contributions of colorless vectorlike fermions to the triple gauge couplings W+W-γ and W+W-Z0. We consider models in which their coupling to the Standard Model Higgs boson is allowed or forbidden by quantum numbers. We assess the sensitivity of the future accelerators FCC-ee, ILC, and CLIC to the parameters of these models, assuming they will be able to constrain the anomalous triple gauge couplings with precision δκV~O(10-4), V = γ,Z0. We show that the combination of measurements at different center-of-mass energies helps to improve the sensitivity to the contribution of vectorlike fermions, in particular when they couple to the Higgs. In fact, the measurements at the FCC-ee and, especially, the ILC and the CLIC, may turn the triple gauge couplings into a new set of precision parameters able to constrain the models better than the oblique parameters or the H → γγ decay, even assuming the considerable improvement of the latter measurements achievable at the new machines.},

  doi          = {10.1103/PhysRevD.96.035035},

  journal      = {Physical Review D},

  number       = 3,

  volume       = 96,

  place        = {United States},

  year         = {Wed Aug 30 00:00:00 EDT 2017},

  month        = {Wed Aug 30 00:00:00 EDT 2017}

}

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Works referenced in this record:

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Title: Constraints from triple gauge couplings on vectorlike leptons

Abstract

Citation Formats

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journal, August 2015

Search for heavy neutral and charged leptons in e+e− annihilation at LEP
journal, September 2001

Higgs production cross-section in a Standard Model with four generations at the LHC
journal, August 2011

A small weak scale from a small cosmological constant
journal, May 2017

The global electroweak fit at NNLO and prospects for the LHC and ILC
journal, September 2014

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journal, July 1992

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Leptons in composite MFV
journal, September 2013

Two Higgs doublet model with vectorlike leptons and contributions to pp → W W and H → W W
journal, February 2016

Sensitivities of prospective future e + e − colliders to decoupled new physics
journal, March 2016

Measurement of the $Z γ \to ν \overline{ν} γ$ production cross section in pp collisions at $\sqrt{s} = 8 TeV$ and limits on anomalous ZZ γ and Z γγ trilinear gauge boson couplings
journal, September 2016

Spontaneous twin symmetry breaking
journal, December 2019

Phenomenology of doublet-triplet fermionic dark matter in nonstandard cosmology and multicomponent dark sectors
journal, November 2018