35 citations · 119 across the 21 of their papers we have counts for
21 papers
Measuring the trilinear Higgs self-coupling in Higgs boson pair production at multi-TeV muon colliders
Kingman Cheung, Jae Sik Lee, Soojin Lee +1
The trilinear Higgs self-coupling determines the shape of the Higgs potential, and its measurement is a central goal of future colliders. We assess the sensitivity of multi-TeV muo…
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…
Can a pseudoscalar with a mass of 365 GeV in the 2HDM explain the CMS excess?
Chih-Ting Lu, Kingman Cheung, Dongjoo Kim +2
We analyze the CMS-reported t tbar excess within conventional Two-Higgs-Doublet Models of Types I, II, X, and Y, using the best-fit pseudoscalar parameters MA = 365 GeV, GammaA ove…
Intrinsic Properties of Large CP Violation in the Complex Two-Higgs-Doublet Model
Soojin Lee, A. Hammad, Dongjoo Kim +1
We investigate the parameter space supporting large CP violation (CPV) in the complex two-Higgs-doublet model with softly broken symmetry, where the 125~GeV Higgs boson is…
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^…
Can a pseudoscalar with a mass of 365 GeV in two-Higgs-doublet models explain the CMS excess?
Chih-Ting Lu, Kingman Cheung, Dongjoo Kim +2
We investigate the recently reported excess by the CMS Collaboration within the framework of conventional Two-Higgs-Doublet Models (2HDMs). Considering all four types (I…
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…
and to probe the fermiophobic Higgs boson with high cutoff scales
Jinheung Kim, Soojin Lee, Prasenjit Sanyal +2
The light fermiophobic Higgs boson in the type-I two-Higgs-doublet model can evade the current search programs at the LHC since its production through the quark-antiqua…
Disentangling the high and low cutoff scales via the trilinear Higgs couplings in the type-I two-Higgs-doublet model
Sin Kyu Kang, Jinheung Kim, Soojin Lee +1
The type-I two-Higgs-doublet model in the inverted Higgs scenario can retain the theoretical stability all the way up to the Planck scale. The Planck-cutoff scale, $Λ_{\rm cut}^{\r…
Fermiophobic light Higgs boson in the type-I two-Higgs-doublet model
Jinheung Kim, Soojin Lee, Prasenjit Sanyal +1
The null results in the new physics searches at the LHC do not exclude an intermediate-mass new particle if it is fermiophobic. Type-I in the two-Higgs-doublet model accommodates a…
Status of the two-Higgs-doublet model in light of the CDF measurement
Soojin Lee, Kingman Cheung, Jinheung Kim +2
The most recent -boson mass measurement by the CDF collaboration with a substantially reduced uncertainty indicates a significant deviation from the standard model prediction, a…
Comprehensive study of the light charged Higgs boson in the type-I two-Higgs-doublet model
Kingman Cheung, Adil Jueid, Jinheung Kim +3
In the type-I two-Higgs-doublet model, existing theoretical and experimental constraints still permit the light charged Higgs boson with a mass below the top quark mass. We present…
Type-X two Higgs doublet model in light of the muon : confronting Higgs and collider data
Adil Jueid, Jinheung Kim, Soojin Lee +1
The recent Fermilab measurement of the muon anomalous magnetic moment yields deviations from the SM prediction when combined with the BNL E821 experiment results. In the Ty…
Studies of nonresonant Higgs pair production at electron-proton colliders
Adil Jueid, Jinheung Kim, Soojin Lee +1
The measurement of the Higgs quartic coupling modifier between a Higgs boson pair and a vector boson pair, , is expected to be achieved from vector-boson fusion (VBF) produ…
Proceedings of the second MadAnalysis 5 workshop on LHC recasting in Korea
Benjamin Fuks, Pyungwon Ko, Seung J. Lee +32
We document the activities performed during the second MadAnalysis 5 workshop on LHC recasting, that was organised in KIAS (Seoul, Korea) on February 12-20, 2020. We detail the imp…
Phenomenology of the Inert Doublet Model with a global U(1) symmetry
Adil Jueid, Jinheung Kim, Soojin Lee +2
The inert doublet model is a minimal dark matter model with strong theoretical motivations, where the stability of dark matter is usually achieved by imposing a parity. We pr…