https://doi.org/10.1140/epjc/s10052-024-12918-z
Regular Article - Experimental Physics
Probing gauge-Higgs unification models at the ILC with quark–antiquark forward–backward asymmetry at center-of-mass energies above the Z mass
1
IFIC, Universitat de València and CSIC, C./ Catedrático José Beltrán 2, 46980, Paterna, Spain
2
Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France
3
Department of Physics, National Taiwan University, 10617, Taipei, Taiwan, ROC
4
Yukawa Institute for Theoretical Physics, Kyoto University, Kitashirakawa Oiwakecho, Sakyo-ku, 606-8502, Kyoto, Japan
Received:
15
March
2024
Accepted:
14
May
2024
Published online:
28
May
2024
The International Linear Collider (ILC) will allow the precise study of interactions at different center-of-mass energies from the
-pole to 1 TeV. In this paper, we discuss the experimental prospects for measuring differential observables in
and
at the ILC baseline energies, 250 and 500 GeV. The study is based on full simulation and reconstruction of the International Large Detector (ILD) concept. Two gauge-Higgs unification models predicting new high-mass resonances beyond the Standard Model are discussed. These models predict sizable deviations of the forward–backward observables at the ILC running above the Z mass and with longitudinally polarized electron and positron beams. The ability of the ILC to probe these models via high-precision measurements of the forward–backward asymmetry is discussed. Alternative scenarios at other energies and beam polarization schemes are also discussed, extrapolating the estimated uncertainties from the two baseline scenarios.
H. Yamamoto: On leave from Tohoku University, Sendai, Japan.
© The Author(s) 2024
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Funded by SCOAP3.