activity
20152026
most citedThe Forward Physics Facility: Sites, Experiments, and Physics Potential

181 citations · 738 across the 31 of their papers we have counts for

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30 papers · 1 filter

hep-ph2026

Endothermic Z'-Portal Dark Matter: LZ-LHC Complementarity

Nobuchika Okada, Digesh Raut

Motivated by the high-energy recoil event recently reported by the LUX-ZEPLIN (LZ) Collaboration, we consider an endothermic -portal Majorana dark matter framework…

hep-ph2025★ 1 cited

Nambu-Goldstone boson phenomenology in Domain-Wall Standard Model

Puja Das, Nobuchika Okada, Digesh Raut +1

We investigate the Domain-Wall Standard Model (DWSM), a five-dimensional framework in which all Standard Model (SM) particles are localized on a domain wall embedded in a non-compa…

hep-ph2025

Analytic formulation of Leptogenesis with neutrino oscillation data employing the general parametrization for neutrino mass matrix

Nobuchika Okada, Digesh Raut

The observed neutrino oscillations and baryon asymmetry, unexplained by the Standard Model (SM), can both be accounted for by extending the SM to include Majorana right-handed neut…

hep-ph2023

Higgs-Portal Dark Matter in Brane-World Cosmology

Taoli Liu, Nobuchika Okada, Digesh Raut

The Higgs-portal scalar dark matter (DM) model is a simple extension of the Standard Model (SM) to incorporate a DM particle to the SM, where a -odd real scalar field is intro…

hep-ph2022★ 9 cited

Axions, WIMPs, proton decay and observable in

Nobuchika Okada, Digesh Raut, Qaisar Shafi

We explore some experimentally testable predictions of an axion model which includes two 10-plets of fermions in order to resolve the axion domain wall problem. The axion…

hep-ph2022★ 15 cited

Type III seesaw with R-parity violation in light of (CDF)

Anish Ghoshal, Nobuchika Okada, Satomi Okada +3

Motivated by the recently reported measurement of the boson mass GeV by the CDF collaboration, we propose a type III seesaw extension of the minimal…

hep-ph2022★ 4 cited

Monopoles, Exotic states and Muon in TeV scale Trinification

Digesh Raut, Qaisar Shafi, Anil Thapa

We study the low energy implications of a trinification model based on the gauge symmetry , without imposing gauge coupling unification. A…

hep-ph2021★ 181 cited

The Forward Physics Facility: Sites, Experiments, and Physics Potential

Luis A. Anchordoqui, Akitaka Ariga, Tomoko Ariga +78

The Forward Physics Facility (FPF) is a proposal to create a cavern with the space and infrastructure to support a suite of far-forward experiments at the Large Hadron Collider dur…

hep-ph2021

Axion Model with Observable Proton Decay

Nobuchika Okada, Digesh Raut, Qaisar Shafi

We propose a model, where is the generalization of the (baryon minus lepton number) gauge symmetry and is the glob…

hep-ph2021★ 20 cited

Pseudo-Goldstone Dark Matter in

Nobuchika Okada, Digesh Raut, Qaisar Shafi +1

We propose a pseudo-Goldstone boson dark matter (pGDM) particle in grand unified theory (GUT). Due to its Goldstone nature, this pGDM evades the direct DM detection experi…

hep-ph2020★ 46 cited

Dark Matter and XENON1T Excess from Extended Standard Model

Nobuchika Okada, Satomi Okada, Digesh Raut +1

A gauged symmetry appended to the Standard Model (SM) is particularly well-motivated since it can account for the light neutrino masses by the seesaw mechanism, explain th…

hep-ph2020★ 13 cited

SMART U(1) Standard Model with Axion, Right handed neutrinos, Two Higgs doublets and U(1) gauge symmetry

Nobuchika Okada, Digesh Raut, Qaisar Shafi

To address five fundamental shortcomings of the Standard Model (SM) of particle physics and cosmology, we propose a SMART U(1) model which is a extens…

hep-ph2020★ 32 cited

Pseudo-Goldstone Dark Matter in gauged extended Standard Model

Nobuchika Okada, Digesh Raut, Qaisar Shafi

Gauging the global (Baryon number minus Lepton number) symmetry in the Standard Model (SM) is well-motivated since anomaly cancellations require the introduction of three rig…

hep-ph2019★ 1 cited

Displaced Vertex and Disappearing Track Signatures in type-III Seesaw

Sudip Jana, Nobuchika Okada, Digesh Raut

We investigate a prospect of probing the type-III seesaw neutrino mass generation mechanism at various collider experiments by searching for a disappearing track and a displaced ve…

hep-ph2019★ 12 cited

Inflection-Point Inflation with Axion Dark Matter in light of Trans-Planckian Censorship Conjecture

Nobuchika Okada, Digesh Raut, Qaisar Shafi

Motivated by the recently proposed Trans-Planckian Censorship Conjecture (TCC), we propose a gauged model of inflection-point inflation with axion dark matter. The Hubble sca…

hep-ph2019★ 24 cited

Hunting Inflaton at FASER

Nobuchika Okada, Digesh Raut

We explore a possibility that an inflaton, which drives the cosmological inflation in the early Universe, can be detected by the recently approved FASER at the High-Luminosity LHC…

hep-ph2019★ 1 cited

Inflation, Proton Decay, and Higgs-Portal Dark Matter in

Nobuchika Okada, Digesh Raut, Qaisar Shafi

We propose a simple non-supersymmetric grand unified theory (GUT) based on the gauge group . The model includes 3 generations of fermions in ()…

hep-ph2019★ 5 cited

Fermion Mass Hierarchy and Phenomenology in the 5D Domain Wall Standard Model

Nobuchika Okada, Digesh Raut, Desmond Villalba

We have recently proposed a setup of the "Domain-Wall Standard Model" in 5D spacetime, where all the Standard Model (SM) fields are localized in certain domains of the extra 5th di…

hep-ph2018★ 44 cited

Probing the seesaw mechanism at the 250 GeV ILC

Arindam Das, Nobuchika Okada, Satomi Okada +1

We consider a gauged U(1) (Baryon-minus-Lepton number) extension of the Standard Model (SM), which is anomaly-free in the presence of three Right-Handed Neutrinos (RHNs). A…

hep-ph2018★ 32 cited

A natural -portal Majorana dark matter in alternative U(1) extended Standard Model

Nobuchika Okada, Satomi Okada, Digesh Raut

We consider a non-exotic gauged U(1) extension of the Standard Model (SM), where the U(1) charge of a SM field is given by a linear combination of its hypercharge and Baryo…

hep-ph2018★ 34 cited

Displaced vertex signature of type-I seesaw

Sudip Jana, Nobuchika Okada, Digesh Raut

A certain class of new physics models includes long-lived particles which are singlet under the Standard Model (SM) gauge group.A displaced vertex is a spectacular signature to pro…

hep-ph2018★ 3 cited

Aspects of Domain-Wall Standard Model

Nobuchika Okada, Digesh Raut, Desmond Villalba

We have recently proposed a setup of the "Domain-Wall Standard Model" in a non-compact 5-dimensional space-time, where all the Standard Model (SM) fields are localized in certain d…

hep-ph2017★ 7 cited

Domain-Wall Standard Model in non-compact 5D and LHC phenomenology

Nobuchika Okada, Digesh Raut, Desmond Villalba

We propose a framework to construct "Domain-Wall Standard Model" in a non compact 5-dimensional space-time, where all the Standard Model (SM) fields are localized in certain domain…

hep-ph2017★ 29 cited

SU(5)U(1) grand unification with minimal seesaw and -portal dark matter

Nobuchika Okada, Satomi Okada, Digesh Raut

We propose a grand unified SU(5)U(1) model, where the standard SU(5) grand unified theory is supplemented by minimal seesaw and a right-handed neutrino dark matter with…