Shuichiro Funatsu

activity

20132025

most citedNovel universality and Higgs decay H -> γγ, gg in the SO(5) x U(1) gauge-Higgs unification

52 citations · 346 across the 22 of their papers we have counts for

collaborators

22 papers

hep-ph2025

Origin of CKM matrix and natural FCNC suppression in gauge-Higgs unification

Yutaka Hosotani, Shuichiro Funatsu, Hisaki Hatanaka +2

In the $S O (5) \times U (1) \times S U (3)$ gauge-Higgs unification in the Randall-Sundrum warped space the mixing in the $W$ couplings in the quark sector is induced by masses of $SO(…

hep-ph2023★ 1 cited

$W$ boson mass in gauge-Higgs unification

Yutaka Hosotani, Shuichiro Funatsu, Hisaki Hatanaka +2

The $W$ boson mass $m_{W}$ in the GUT inspired $S O (5) \times U (1) \times S U (3)$ gauge-Higgs unification in the Randall-Sundrum (RS) warped space is evaluated. The muon decay $μ^- \ri…

hep-ph2023

$W$ and $Z$ Boson Pair Production at Electron-Positron Colliders in Gauge-Higgs Unification

Naoki Yamatsu, Shuichiro Funatsu, Hisaki Hatanaka +2

We examine $W$ and $Z$ boson pair production processes at electron-positron collider experiments in the $S U (3)_{C} \times S O (5)_{W} \times U (1)_{X}$ gauge-Higgs unification (GHU) model. We…

hep-ph2023★ 4 cited

Coupling Sum Rules and Oblique Corrections in Gauge-Higgs Unification

Yutaka Hosotani, Shuichiro Funatsu, Hisaki Hatanaka +2

In GUT inspired $S O (5) \times U (1)_{X} \times S U (3)_{C}$ gauge-Higgs unification (GHU) in the Randall-Sundrum warped spacetime, the $W$ and $Z$ couplings of all 4D fermion modes become…

hep-ph2023★ 9 cited

Single Higgs Boson Production at Electron-Positron Colliders in Gauge-Higgs Unification

Shuichiro Funatsu, Hisaki Hatanaka, Yuta Orikasa +1

We examine contributions to single Higgs boson production processes via $Z^{'}$ and $W^{'}$ bosons in the $S U (3)_{C} \times S O (5)_{W} \times U (1)_{X}$ gauge-Higgs unification (GHU) model. In par…

hep-ph2022★ 8 cited

Anomaly flow by an Aharonov-Bohm phase

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

In gauge-Higgs unification (GHU), gauge symmetry is dynamically broken by an Aharonov-Bohm (AB) phase, $θ_{H}$ , in the fifth dimension. We analyze $S U (2)$ GHU with an $S U (2)$ doublet…

hep-ph2022★ 6 cited

Bhabha scattering in the gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

We examine effects of $Z^{'}$ bosons in gauge-Higgs unification (GHU) models at $e^{+} e^{-} \to e^{+} e^{-}$ Bhabha scatterings. We evaluate differen…

hep-ph2022★ 6 cited

Rare top-quark decays $t \to c g (g)$ in the aligned two-Higgs-doublet model

Fang-Min Cai, Shuichiro Funatsu, Xin-Qiang Li +1

We update the Standard Model (SM) predictions for the branching ratios of the rare top-quark decays $t \to c g (g)$ , and evaluate the maximum rates that can be reached in the aligned…

hep-ph2021★ 7 cited

Signals of $W^{'}$ and $Z^{'}$ bosons at the LHC in the $S U (3) \times S O (5) \times U (1)$ gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

The $pp \to {W, W^{'}} \to l ν$ and $pp \to {γ, Z, Z^{'}} \to l^{+} l^{-}$ ( $l = e, μ$ ) processes in the $S U (3)_{C} \times S O (5) \times U (1)_{X}$ gauge-Higgs unification (GHU) models are studied, whe…

hep-ph2021★ 14 cited

Electroweak and Left-Right Phase Transitions in $S O (5) \times U (1) \times S U (3)$ Gauge-Higgs Unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

The electroweak phase transition in GUT inspired $S O (5) \times U (1) \times S U (3)$ gauge-Higgs unification is shown to be weakly first order and occurs at $T = T_c^{\rm EW} \sim 163\…

hep-ph2021★ 1 cited

Linear Collider Signals of $Z^{'}$ Bosons in GUT Inspired Gauge-Higgs Unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

In gauge-Higgs unification (GHU), the 4D Higgs boson appears as a part of the fifth dimensional component of 5D gauge field. Recently, an $S O (11)$ GUT inspired $SO(5)\times U(1)\ti…

hep-ph2020★ 25 cited

Fermion pair production at $e^{-} e^{+}$ linear collider experiments in GUT inspired gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

Fermion pair production at $e^{-} e^{+}$ linear collider experiments with polarized $e^{-}$ and $e^{+}$ beams is examined in the GUT inspired $S O (5) \times U (1) \times S U (3)$ gauge-Higgs unif…

hep-ph2020★ 28 cited

The effective potential and universality in GUT inspired gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

The effective potential for the Aharonov-Bohm phase $θ_{H}$ in the fifth dimension in GUT inspired $S O (5) \times U (1) \times S U (3)$ gauge-Higgs unification is evaluated to show that d…

hep-ph2019★ 29 cited

CKM matrix and FCNC suppression in $S O (5) \times U (1) \times S U (3)$ gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

The Cabibbo-Kobayashi-Maskawa (CKM) mixing matrix and flavor-changing neutral currents (FCNC's) in the quark sector are examined in the GUT inspired $SO(5) \times U(1) \times SU(3)…

hep-ph2019★ 13 cited

Forward-backward asymmetry in the gauge-Higgs unification at the International Linear Collider

Shuichiro Funatsu

The signals of the SO(5) \times U(1) gauge-Higgs unification model at the International Linear Collider are studied. In this model, Kaluza-Klein modes of the neutral gauge bosons a…

hep-ph2019★ 29 cited

GUT inspired $S O (5) \times U (1) \times S U (3)$ gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

$S O (5) \times U (1) \times S U (3)$ gauge-Higgs unification model inspired by $S O (11)$ gauge-Higgs grand unification is constructed in the Randall-Sundrum warped space. The 4D Higgs b…

hep-ph2017★ 34 cited

Distinct signals of the gauge-Higgs unification in $e^{+} e^{-}$ collider experiments

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +1

Effects of Kaluza-Klein excited neutral vector bosons ( $Z^{'}$ bosons) in the gauge-Higgs unification on $e^{+} e^{-} \to q ˉ q, ℓ^{+} ℓ^{-}$ cross sections are studied, particularly i…

hep-ph2016★ 17 cited

Collider signals of $W^{'}$ and $Z^{'}$ bosons in the gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +1

In the $S O (5) \times U (1)$ gauge-Higgs unification (GHU), Kaluza-Klein (KK) excited states of charged and neutral vector bosons, $W^{(1)}$ , $W_{R}^{(1)}$ , $Z^{(1)}$ , $γ^{(1)}$ and $Z_…

hep-ph2015★ 16 cited

$H \to Z γ$ in the gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani

The decay rate of the Higgs decay $H \to Z γ$ is evaluated at the one-loop level in the $S O (5) \times U (1)$ gauge-Higgs unification. Although an infinite number of loops with Kaluza…

hep-ph2014★ 15 cited

Dark matter in the $S O (5) \times U (1)$ gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

In the $S O (5) \times U (1)$ gauge-Higgs unification the lightest, neutral component of $n_{F}$ $S O (5)$ -spinor fermions (dark fermions), which are relevant for having the observed unst…

hep-ph2014★ 32 cited

LHC signals of the $S O (5) \times U (1)$ gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

Signatures of the $S O (5) \times U (1)$ gauge-Higgs unification at LHC and future colliders are explored. The Kaluza-Klein (KK) mass spectra of $γ, Z, Z_{R}$ and the Higgs self-coupling…

hep-ph2013★ 52 cited

Novel universality and Higgs decay H -> γγ, gg in the SO(5) x U(1) gauge-Higgs unification

Shuichiro Funatsu, Hisaki Hatanaka, Yutaka Hosotani +2

The SO(5) x U(1) gauge-Higgs unification in the Randall-Sundrum warped space with the Higgs boson mass m_H=126 GeV is constructed. An universal relation is found between the Kaluza…

Origin of CKM matrix and natural FCNC suppression in gauge-Higgs unification

W boson mass in gauge-Higgs unification

W and Z Boson Pair Production at Electron-Positron Colliders in Gauge-Higgs Unification

Coupling Sum Rules and Oblique Corrections in Gauge-Higgs Unification

Single Higgs Boson Production at Electron-Positron Colliders in Gauge-Higgs Unification

Anomaly flow by an Aharonov-Bohm phase

Bhabha scattering in the gauge-Higgs unification

Rare top-quark decays t→cg(g) in the aligned two-Higgs-doublet model

Signals of W′ and Z′ bosons at the LHC in the SU(3)×SO(5)×U(1) gauge-Higgs unification

Electroweak and Left-Right Phase Transitions in SO(5)×U(1)×SU(3) Gauge-Higgs Unification

Linear Collider Signals of Z′ Bosons in GUT Inspired Gauge-Higgs Unification

Fermion pair production at e−e+ linear collider experiments in GUT inspired gauge-Higgs unification

The effective potential and universality in GUT inspired gauge-Higgs unification

CKM matrix and FCNC suppression in SO(5)×U(1)×SU(3) gauge-Higgs unification

Forward-backward asymmetry in the gauge-Higgs unification at the International Linear Collider

GUT inspired SO(5)×U(1)×SU(3) gauge-Higgs unification

Distinct signals of the gauge-Higgs unification in e+e− collider experiments

Collider signals of W′ and Z′ bosons in the gauge-Higgs unification

H→Zγ in the gauge-Higgs unification

Dark matter in the SO(5)×U(1) gauge-Higgs unification

LHC signals of the SO(5)×U(1) gauge-Higgs unification

Novel universality and Higgs decay H -> γγ, gg in the SO(5) x U(1) gauge-Higgs unification

$W$ boson mass in gauge-Higgs unification

$W$ and $Z$ Boson Pair Production at Electron-Positron Colliders in Gauge-Higgs Unification

Rare top-quark decays $t \to c g (g)$ in the aligned two-Higgs-doublet model

Signals of $W^{'}$ and $Z^{'}$ bosons at the LHC in the $S U (3) \times S O (5) \times U (1)$ gauge-Higgs unification

Electroweak and Left-Right Phase Transitions in $S O (5) \times U (1) \times S U (3)$ Gauge-Higgs Unification

Linear Collider Signals of $Z^{'}$ Bosons in GUT Inspired Gauge-Higgs Unification

Fermion pair production at $e^{-} e^{+}$ linear collider experiments in GUT inspired gauge-Higgs unification

CKM matrix and FCNC suppression in $S O (5) \times U (1) \times S U (3)$ gauge-Higgs unification

GUT inspired $S O (5) \times U (1) \times S U (3)$ gauge-Higgs unification

Distinct signals of the gauge-Higgs unification in $e^{+} e^{-}$ collider experiments

Collider signals of $W^{'}$ and $Z^{'}$ bosons in the gauge-Higgs unification

$H \to Z γ$ in the gauge-Higgs unification

Dark matter in the $S O (5) \times U (1)$ gauge-Higgs unification

LHC signals of the $S O (5) \times U (1)$ gauge-Higgs unification