1.

Neutrino mass in a gauged L μ − L τ model
/ Chen, ChuanHung ; Nomura, Takaaki
We study the origin of neutrino mass through leptonnumber violation and spontaneous U(1)Lμ−Lτ symmetry breaking. [...]
Published in Nuclear Physics B 940 (2019) 292311
10.1016/j.nuclphysb.2019.01.016
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2.

Charged Higgs boson contribution to ${B}_{q}^{}\to \ell \overline{\nu}$ and $\overline{B}\to (P,V)\ell \overline{\nu}$ in a generic twoHiggs doublet model
/ Chen, ChuanHung ; Nomura, Takaaki
We comprehensively study the charged Higgs boson contributions to the leptonic ${B}_{q}^{}\to \ell \overline{\nu}$ ($q=u$, $c$) and semileptonic $\overline{B}\to {X}_{q}\ell \overline{\nu}$ (${X}_{u}=\pi $, $\rho $; ${X}_{c}=D$, ${D}^{*}$) decays in the typeIII twoHiggs doublet model. [...]
Published in Physical Review D 98 (2018)
10.1103/PhysRevD.98.095007
arXiv:1803.00171
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3.

ϵ ′ / ϵ from chargedHiggsinduced gluonic dipole operators
/ Chen, ChuanHung ; Nomura, Takaaki
We study the effect of chargedHiggsinduced chromomagnetic operator, Q8G(−)≡s¯σμνTaγ5dGaμν , on the Kaon direct CP violation Re(ϵ′/ϵ) . [...]
Published in Physics letters B 787 (2018) 182187
10.1016/j.physletb.2018.11.006
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4.

Re (ϵ K ′ /ϵ K ) and K → π ν ν ¯ $$ K\to \pi \nu \overline{\nu} $$ in a twoHiggs doublet model
/ Chen, ChuanHung ; Nomura, Takaaki
The Kaon direct CP violation Re (ϵ K ′ /ϵ K ) below the experimental data of a 2 σ in the standard model, which is calculated using the RBCUKQCD lattice and a large N c dual QCD, indicates the necessity of a new physics effect. [...]
Published in JHEP 1808 (2018) 145
10.1007/JHEP08(2018)145
arXiv:1804.06017
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5.

Explaining the DAMPE ${e}^{+}{e}^{}$ excess using the Higgs triplet model with a vector dark matter
/ Chen, ChuanHung ; Chiang, ChengWei ; Nomura, Takaaki
We explain the ${e}^{+}{e}^{}$ excess observed by the DAMPE Collaboration using a dark matter model based upon the Higgs triplet model and an additional hidden $SU(2{)}_{X}$ gauge symmetry. [...]
Published in Phys. Rev. D 97 (2018)
10.1103/PhysRevD.97.061302
arXiv:1712.00793
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6.

Penguin b→sℓ′+ℓ′− and B meson anomalies in a gauged L μ − L τ
/ Chen, ChuanHung ; Nomura, Takaaki
The Z′ gauge boson in an U(1)Lμ−Lτ gauge symmetry has two interesting features: one is its vector couplings to the charged leptons, and the other is the decoupling from the electron. [...]
Published in Physics letters B (2018)
10.1016/j.physletb.2017.12.062
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7.

Excesses of muon g − 2, RD(⁎) , and RK(⁎) in a leptoquark model
/ Chen, ChuanHung ; Nomura, Takaaki ; Okada, Hiroshi
In this study, we investigate muon g−2 , RK(⁎) , and RD(⁎) anomalies in a specific model with one doublet, one triplet, and one singlet scalar leptoquark (LQ). [...]
Published in Physics letters B (2017)
10.1016/j.physletb.2017.10.005
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8.

ChargedHiggs on RD(∗) , τ polarization, and FBA
/ Chen, ChuanHung ; Nomura, Takaaki
We study the influence of a chargedHiggs on the excess of branching fraction ratio, RM=BR(B¯→Mτν¯τ)/BR(B¯→Mℓν¯ℓ) (M=D,D∗) , in a generic twoHiggsdoublet model. [...]
Published in EPJC 77 (2017) 631
10.1140/epjc/s1005201751986
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9.

Search for a lightcharged Higgs in a twoHiggsdoublet type II seesaw model at the LHC
/ Chen, ChuanHung ; Nomura, Takaaki
A charged Higgs in the type II twoHiggsdoublet model (THDM) has been bounded to be above a few hundred GeV by the radiative B decays. [...]
Published in Physics letters B (2017)
10.1016/j.physletb.2017.01.080
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10.

Light gauge boson in rare K decay
/ Chen, ChuanHung ; Nomura, Takaaki
We study the production of a light gauge boson in K−→π−X decay, where the associated new charge current is not conserved. [...]
Published in Physics letters B (2016)
10.1016/j.physletb.2016.10.063
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