83 citations · 463 across the 30 of their papers we have counts for
30 papers · 1 filter
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…
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…
Exploring interference effects between two ALP effective operators at the LHC
Kingman Cheung, Chih-Ting Lu, C. J. Ouseph +1
We observe that most studies of axion-like particle (ALP) production channels at the Large Hadron Collider (LHC) focus on a single type of ALP operator for each process in the effe…
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…
Probing highly collimated photon-jets with deep learning
Xiaocong Ai, Shih-Chieh Hsu, Ke Li +1
Many extensions of the standard model (SM) predict the existence of axion-like particles and/or dark Higgs in the sub-GeV scale. Two new sub-GeV particles, a scalar and a pseudosca…
Scalar and Fermion Two-component SIMP Dark Matter with an Accidental Symmetry
Shu-Yu Ho, Pyungwon Ko, Chih-Ting Lu
In this paper, we construct for the first time a two-component strongly interacting massive particles (SIMP) dark matter (DM) model, where a complex scalar and a vector-like fermio…
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…
Reshuffled Strongly Interacting Massive Particle Dark Matter
Shu-Yu Ho, Pyungwon Ko, Chih-Ting Lu
In this work, we reanalyze the multi-component strongly interacting massive particle (mSIMP) scenario using an effective operator approach. As in the single-component SIMP case, th…
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…
Exploring properties of long-lived particles in inelastic dark matter models at Belle II
Dong Woo Kang, P. Ko, Chih-Ting Lu
The inelastic dark matter model is one kind of popular models for the light dark matter (DM) below GeV. If the mass splitting between DM excited and ground states is small e…
Sensitivity Reach on the Heavy Neutral Leptons and -Neutrino Mixing at the HL-LHC
Kingman Cheung, Yi-Lun Chung, Hiroyuki Ishida +1
The model of heavy neutral leptons (HNLs) is one of the well-motivated models beyond the standard model (BSM) from both theoretical and phenomenological point of views. It is an in…
Disentangling new physics effects on non-resonant Higgs boson pair production from gluon fusion
Kingman Cheung, Adil Jueid, Chih-Ting Lu +2
There are two kinds of new physics effects on non-resonant di-Higgs process from gluon fusion, non-SM Higgs trilinear self-coupling or new colored particles running in th…
Vector-like Quark Interpretation for the CKM Unitarity Violation, Excess in Higgs Signal Strength, and Bottom Quark Forward-Backward Asymmetry
Kingman Cheung, Wai-Yee Keung, Chih-Ting Lu +1
Due to a recent more precise evaluation of and , the unitarity condition of the first row in the Cabibbo-Kobayashi-Maskawa (CKM) matrix: $|V_{ud}|^2 + |V_{us}|^2 +…
Confronting dark matter co-annihilation of Inert two Higgs Doublet Model with a compressed mass spectrum
Chih-Ting Lu, Van Que Tran, Yue-Lin Sming Tsai
We perform a comprehensive analysis for the light scalar dark matter (DM)in the Inert two Higgs doublet model (i2HDM) with compressed mass spectra, small mass splittings among thre…
Same-sign Charged Higgs Pair Production in bosonic decay channels at the HL-LHC and HE-LHC
Abdesslam Arhrib, Kingman Cheung, Chih-Ting Lu
Same-sign charged Higgs pair production via vector-boson scattering is a useful probe of the mass spectrum among the heavier scalar, pseudoscalar, and charged Higgs bosons in two-H…
Sneutrino Dark Matter via pseudoscalar X-funnel meets Inverse Seesaw
Jung Chang, Kingman Cheung, Hiroyuki Ishida +3
In this paper we study sneutrino dark matter in a recently proposed supersymmetric electroweak-scale inverse seesaw model, in which the majority of the sneutrino dark matter partic…
Higgs-boson-pair production from gluon fusion at the HL-LHC and HL-100 TeV hadron collider
Jung Chang, Kingman Cheung, Jae Sik Lee +2
We perform the most up-to-date comprehensive signal-background analysis for Higgs-pair production in channel at the HL-LHC and HL-100 TeV hadron collider, with…
Measuring properties of a Heavy Higgs boson in the decay
Jung Chang, Kingman Cheung, Jae Sik Lee +2
Suppose a heavy neutral Higgs or scalar boson is discovered at the LHC, it is important to investigate its couplings to the standard model particles as much as possible. Here i…
Measuring properties of a Heavy Higgs boson in the decay
Jung Chang, Kingman Cheung, Jae Sik Lee +2
In many extensions of the standard model, there exist a few extra Higgs bosons. Suppose a heavy neutral Higgs boson H is discovered at the LHC, one could then investigate CP and CP…
Signals of New Gauge Bosons in Gauged Two Higgs Doublet Model
Wei-Chih Huang, Hiroyuki Ishida, Chih-Ting Lu +2
Recently a gauged two Higgs doublet model, in which the two Higgs doublets are embedded into the fundamental representation of an extra local group, is constructed. Both…
A supersymmetric electroweak scale seesaw model
Jung Chang, Kingman Cheung, Hiroyuki Ishida +3
In this paper we propose a novel supersymmetric inverse seesaw model which has only one additional symmetry. The field content is minimal to get a viable neutrino spectrum at…
Interpreting the 3 TeV Resonance as a boson
Kingman Cheung, Wai-Yee Keung, Chih-Ting Lu +1
Motivated by a local sigma resonance in and in the ATLAS Run 2 data, we attempt to interpret the excess in terms of a boson in a $SU(2)_1 \times SU(2)_2 \t…
Detecting multimuon jets from the Higgs exotic decays in the Higgs portal framework
Jung Chang, Kingman Cheung, Shih-Chieh Hsu +1
A muon jet (-jet) is a very special feature that consists of a cluster of collimated muons from the decay of a fast moving light particle of mass about (1 GeV). We…
Entangling Higgs production associated with a single top and a top-quark pair in the presence of anomalous top-Yukawa coupling
Jung Chang, Kingman Cheung, Jae Sik Lee +1
The ATLAS and CMS collaborations observed a mild excess in the associated Higgs production with a top-quark pair () and reported the signal strengths of $ μ_{tth}^{\rm A…