Y. Orikasa

activity

20092026

most citedClassically Conformal B-L extended Standard Model

313 citations · 2.1k across the 66 of their papers we have counts for

collaborators

67 papers

hep-ph2026

Implications of tachyonic phase transition in classically scale invariant general $U (1)_{X}$ models

Arindam Das, Katsuya Hashino, Yuta Orikasa +1

We investigate the complementarity between collider searches and gravitational-wave (GW) observations in the classically scale-invariant general $U (1)_{X}$ extension of the Standard…

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-ph2025

Zee-Babu model in a non-holomorphic modular $A_{4}$ symmetry and modular stabilization

Tatsuo Kobayashi, Hiroshi Okada, Yuta Orikasa

We study a Zee-Babu neutrino model in a non-holomorphic modular $A_{4}$ symmetry, and we construct a model so that there are minimum free parameters (two complex parameters). We find…

hep-ph2025

A radiative seesaw in a non-holomorphic modular $S_{3}$ flavor symmetry

Hiroshi Okada, Yuta Orikasa

We study a non-holomorphic modular $S_{3}$ flavor symmetry in which we analyze neutrino sector, dark matter, and lepton flavor violations. The active neutrino mass is generated via o…

hep-ph2024★ 5 cited

Resonant leptogenesis in minimal $U (1)_{X}$ extensions of the Standard Model

Arindam Das, Yuta Orikasa

We investigate a general $U (1)_{X}$ scenario where we introduce three generations of Standard Model (SM) singlet Right Handed Neutrinos (RHNs) to generate the light neutrino mass thr…

hep-ph2024★ 4 cited

$Z^{'}$ induced forward dominant processes in $μ$ TRISTAN experiment

Arindam Das, Yuta Orikasa

General $U (1)$ extension of the Standard Model (SM) is a well motivated beyond the Standard Model(BSM) scenario where three generations of right handed neutrinos (RHNs) are introdu…

hep-ph2023

Novel moduli space in modular flavor models : a case study for modular $T^{'}$ seesaw model with hidden $S U (2)$ gauge symmetry

Keiya Ishiguro, Takaaki Nomura, Hiroshi Okada +2

We study flavor phenomenologies in a basis of a double covering of modular $A_{4}$ group with a hidden $S U (2)$ symmetry, in which we work on regions at nearby two fixed points and th…

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★ 19 cited

Probing chiral and flavored $Z^{'}$ from cosmic bursts through neutrino interactions

ShivaSankar K. A., Arindam Das, Gaetano Lambiase +2

The origin of tiny neutrino mass is an unsolved puzzle leading to a variety of phenomenological aspects beyond the Standard Model (BSM). We consider $U (1)$ gauge extension of the S…

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

Towards unification of lepton and quark mass matrices from double covering of modular $A_{4}$ flavor symmetry

Petr Beneš, Hiroshi Okada, Yuta Orikasa

We study quark and lepton masses and mixings in a double covering of modular $A_{4}$ flavor symmetry in which we search for common solution of a single modulus $τ$ , applying chi-squa…

hep-ph2022★ 14 cited

Lepton mass matrix from double covering of $A_{4}$ modular flavor symmetry

Hiroshi Okada, Yuta Orikasa

We study a double covering of modular $A_{4}$ flavor symmetry in which we construct lepton models in cases of canonical seesaw and radiative seesaw models. Through $χ$ square numeric…

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-ph2021★ 2 cited

Dark matter stability at fixed points in a modular $A_{4}$ symmetry

Tatsuo Kobayashi, Hiroshi Okada, Yuta Orikasa

We propose a new mechanism of stabilization for dark matter under fixed points of modular $A_{4}$ symmetry, thanks to recovering a residual symmetry for each of fixed points at $τ=ω,…

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★ 1 cited

Quark and lepton flavor model with leptoquarks in a modular $A_{4}$ symmetry

Takaaki Nomura, Hiroshi Okada, Yuta Orikasa

We propose a quark-lepton model via leptoquarks and modular $A_{4}$ symmetry. Since the neutrino mass is induced at one-loop level mediated by down quarks as well as leptoquarks, we…

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-ph2021★ 6 cited

Radiative dark matter and neutrino masses from an alternative $U (1)_{B - L}$ gauge symmetry

Hiroshi Okada, Yuta Orikasa, Yutaro Shoji

We propose a model where the masses of the active neutrinos and a dark matter candidate are generated radiatively through the $U (1)_{B - L}$ gauge symmetry breaking. It is realized b…

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★ 66 cited

A radiative seesaw model with three Higgs doublets in modular $A_{4}$ symmetry

Hiroshi Okada, Yutaro Shoji

We propose a radiative seesaw model based on a modular $A_{4}$ symmetry, which has good predictability in the lepton sector. We execute a numerical analysis to search for parameters…

Implications of tachyonic phase transition in classically scale invariant general U(1)X​ models

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

Zee-Babu model in a non-holomorphic modular A4​ symmetry and modular stabilization

A radiative seesaw in a non-holomorphic modular S3​ flavor symmetry

Resonant leptogenesis in minimal U(1)X​ extensions of the Standard Model

Z′ induced forward dominant processes in μTRISTAN experiment

Novel moduli space in modular flavor models : a case study for modular T′ seesaw model with hidden SU(2) gauge symmetry

W boson mass in gauge-Higgs unification

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

Probing chiral and flavored Z′ from cosmic bursts through neutrino interactions

Coupling Sum Rules and Oblique Corrections in Gauge-Higgs Unification

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

Towards unification of lepton and quark mass matrices from double covering of modular A4​ flavor symmetry

Lepton mass matrix from double covering of A4​ modular flavor symmetry

Anomaly flow by an Aharonov-Bohm phase

Bhabha scattering in the gauge-Higgs unification

Dark matter stability at fixed points in a modular A4​ symmetry

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

Quark and lepton flavor model with leptoquarks in a modular A4​ symmetry

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

Radiative dark matter and neutrino masses from an alternative U(1)B−L​ gauge symmetry

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

A radiative seesaw model with three Higgs doublets in modular A4​ symmetry

Implications of tachyonic phase transition in classically scale invariant general $U (1)_{X}$ models

Zee-Babu model in a non-holomorphic modular $A_{4}$ symmetry and modular stabilization

A radiative seesaw in a non-holomorphic modular $S_{3}$ flavor symmetry

Resonant leptogenesis in minimal $U (1)_{X}$ extensions of the Standard Model

$Z^{'}$ induced forward dominant processes in $μ$ TRISTAN experiment

Novel moduli space in modular flavor models : a case study for modular $T^{'}$ seesaw model with hidden $S U (2)$ gauge symmetry

$W$ boson mass in gauge-Higgs unification

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

Probing chiral and flavored $Z^{'}$ from cosmic bursts through neutrino interactions

Towards unification of lepton and quark mass matrices from double covering of modular $A_{4}$ flavor symmetry

Lepton mass matrix from double covering of $A_{4}$ modular flavor symmetry

Dark matter stability at fixed points in a modular $A_{4}$ symmetry

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

Quark and lepton flavor model with leptoquarks in a modular $A_{4}$ symmetry

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

Radiative dark matter and neutrino masses from an alternative $U (1)_{B - L}$ gauge symmetry

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

A radiative seesaw model with three Higgs doublets in modular $A_{4}$ symmetry