10 papers
Cutoff Scales in the Type-I 2HDM with Strongly First-Order Electroweak Phase Transitions: One-Step versus Multistep
Jin-Hwan Cho, Dongjoo Kim, Jinheung Kim +1
We investigate the UV viability of strongly first-order electroweak phase transitions (SFOEWPTs) in the Type-I two-Higgs-doublet model (2HDM), considering both the Normal and Inver…
Strong First-Order Electroweak Phase Transitions and Gravitational Waves in the Normal Two-Higgs-Doublet Model: A Comparative Study of the Four Yukawa Types and Thermal Resummation Schemes
Jin-Hwan Cho, Dongjoo Kim, Jinheung Kim +2
We present a comprehensive global analysis of strong first-order electroweak phase transitions (SFOEWPTs) and their associated stochastic gravitational-wave (GW) backgrounds within…
New physics in toponium's shadow?
Thomas Flacke, Benjamin Fuks, Dongchan Kim +3
ATLAS and CMS have recently reported enhancements in the top-antitop production rate near threshold, a region where non-perturbative QCD dynamics associated with toponium formation…
Multi-step Strong First-Order Electroweak Phase Transitions in the Inverted Type-I 2HDM: Parameter Space, Gravitational Waves, and Collider Phenomenology
Soojin Lee, Dongjoo Kim, Jin-Hwan Cho +2
We investigate the electroweak phase transition (EWPT) within the inverted Type-I two-Higgs-doublet model, where the observed Higgs boson is identified as the hea…
Emerging Photon Jets in the Hadronic Calorimeter: A Novel Signature of Neutral Long-Lived Particles at the LHC
Jinheung Kim, Dongjoo Kim, Soojin Lee +1
We propose a novel collider signature for neutral long-lived particles (LLPs): the emerging photon jet in the hadronic calorimeter (HCAL). This signature arises when a neutral LLP…
Probing a Heavy Dark Boson at Multi-TeV Muon Colliders: Leveraging the Optimized Recoil Mass Technique
Kingman Cheung, Jinheung Kim, Soojin Lee +2
We investigate the discovery potential of multi-TeV muon colliders for a heavy dark boson () with a mass above 1 TeV through the associated production channel $μ^+μ^…
Discovery Prospects for the Light Charged Higgs Boson Decay to an Off-Shell Top Quark and a Bottom Quark at Future High-Energy Colliders
Jinheung Kim, Soojin Lee, Prasenjit Sanyal +2
The charged Higgs boson () with a mass below the top quark mass remains a viable possibility within the Type-I two-Higgs-doublet model under current constraints. While previ…
A Panoramic Study of -Factors for 111 Processes at the 14 TeV LHC
Dongjoo Kim, Soojin Lee, Hanseok Jung +3
In this comprehensive study, we investigate -factors () for a broad array of Standard Model processes at the 14 TeV LHC, which are piv…
Probing Light Fermiophobic Higgs Boson via diphoton jets at the HL-LHC
Daohan Wang, Jin-Hwan Cho, Jinheung Kim +3
In this study, we explore the phenomenological signatures associated with a light fermiophobic Higgs boson, , within the type-I two-Higgs-doublet model at the HL-LHC. Ou…
Exploring lepton flavor violation phenomena of the and Higgs bosons at electron-proton colliders
Adil Jueid, Jinheung Kim, Soojin Lee +2
We comprehensively study the potential for discovering lepton flavor violation (LFV) phenomena associated with the and Higgs bosons at the LHeC and FCC-he. Our meticulous inves…