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Title: Constraints from triple gauge couplings on vectorlike leptons

Here, we study the contributions of colorless vectorlike fermions to the triple gauge couplings W +W -γ and W +W -Z 0. 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,Z 0. 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:
ORCiD logo [1] ; ORCiD logo [2] ; ORCiD logo [1] ; ORCiD logo [1]
  1. Univ. de Sao Paulo, Sao Paulo (Brazil)
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Publication Date:
Report Number(s):
FERMILAB-PUB-17-190-T; arXiv:1706.03073
Journal ID: ISSN 2470-0010; PRVDAQ; 1604283
Grant/Contract Number:
AC02-07CH11359
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)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1452788
Alternate Identifier(s):
OSTI ID: 1377662

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., Web. doi:10.1103/PhysRevD.96.035035.
Bertuzzo, Enrico, Machado, Pedro A. N., Perez-Gonzalez, Yuber F., & Funchal, Renata Zukanovich. Constraints from triple gauge couplings on vectorlike leptons. United States. doi:10.1103/PhysRevD.96.035035.
Bertuzzo, Enrico, Machado, Pedro A. N., Perez-Gonzalez, Yuber F., and Funchal, Renata Zukanovich. 2017. "Constraints from triple gauge couplings on vectorlike leptons". United States. doi:10.1103/PhysRevD.96.035035. https://www.osti.gov/servlets/purl/1452788.
@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 = {2017},
month = {8}
}