1.

A model with flavordependent gauged symmetrySupported by National Center for Theoretical Sciences and MoST (MoST1042112M007003MY3 and MoST1072119M007013MY3)
/ Mu, Linping ; Okada, Hiroshi ; Geng, ChaoQiang
We propose a new model with flavordependent gauged symmetry in addition to the flavorblind symmetry in the Standard Model. [...]
Published in Chinese Phys. C 42 (2018) 123106
10.1088/16741137/42/12/123106
arXiv:1803.05633
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2.

LHC searches for topphilic KaluzaKlein graviton
/ Geng, ChaoQiang ; Huang, Da ; Yamashita, Kimiko
We study the phenomenology of a massive graviton G with nonuniversal couplings to the Standard Model (SM) particles. [...]
Published in JHEP 1810 (2018) 046
10.1007/JHEP10(2018)046
arXiv:1807.09643
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3.

Large ν ‐ ν ¯ $$ \nu \hbox{} \overline{\nu} $$ oscillations from highdimensional lepton number violating operator
/ Geng, ChaoQiang ; Huang, Da
It is usually believed that the observation of the neutrinoantineutrino ( ν ‐ ν ¯ $$ \nu \hbox{} \overline{\nu} $$ ) oscillations is almost impossible since the oscillation probabilities are expected to be greatly suppressed by the square of tiny ratio of neutrino masses to energies. [...]
Published in JHEP 1703 (2017) 103
10.1007/JHEP03(2017)103
arXiv:1612.03721
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4.

Probing gravitational nonminimal coupling with dark energy surveys
/ Geng, ChaoQiang ; Lee, ChungChi ; Wu, YiPeng
We investigate observational constraints on a specific oneparameter extension to the minimal quintessence model, where the quintessence field acquires a quadratic coupling to the scalar curvature through a coupling constant ξ . [...]
Published in EPJC 77 (2017) 162
10.1140/epjc/s1005201747201
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5.

Branching fractions of B(c) decays involving J/ψ and X(3872)Supported in part by National Center for Theoretical Sciences, National Science Council (NSC1012112M007006MY3), MoST (MoST1042112M007003MY3) National Science Foundation of China (11675030)
/ Hsiao, Y. K. ; Geng, ChaoQiang
We study twobody B(c) → Mc(π,K) and semileptonic decays with , where is regarded as the tetraquark state cc̄uū(dd̄). [...]
Published in Chinese Phys. C 41 (2017) 013101
10.1088/16741137/41/1/013101
arXiv:1607.02718
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6.

Direct detection of exothermic dark matter with light mediator
/ Geng, ChaoQiang ; Huang, Da ; Lee, ChunHao ; Wang, Qing
We study the dark matter (DM) direct detection for the models with the effects of the isospinviolating couplings, exothermic scatterings, and/or the lightness of the mediator, proposed to relax the tension between the CDMSSi signals and null experiments. [...]
Published in JCAP 1608 (2016) 009
10.1088/14757516/2016/08/009
arXiv:1605.05098
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7.

Running cosmological constant with observational tests
/ Geng, ChaoQiang ; Lee, ChungChi ; Zhang, Kaituo
We investigate the running cosmological constant model with dark energy linearly proportional to the Hubble parameter, Λ=σH+Λ0 , in which the ΛCDM limit is recovered by taking σ=0 . [...]
Published in Physics letters B (2016)
10.1016/j.physletb.2016.07.026
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8.

Some heavy vector and tensor meson decay constants in lightfront quark model
/ Geng, ChaoQiang ; Lih, ChongChung ; Xia, Chuanhui
We study the decay constants ( fM ) of the heavy vector ( D∗ , Ds∗ , B∗ , Bs∗ , Bc∗ ) and tensor ( D2∗ , Ds2∗ , B2∗ , Bs2∗ ) mesons in the lightfront quark model. [...]
Published in EPJC 76 (2016) 313
10.1140/epjc/s100520164172z
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9.

CP violations in predictive neutrino mass structures
/ Geng, ChaoQiang ; Huang, Da ; Tsai, LuHsing
We study the CPviolation effects from two types of neutrino mass matrices with (i) (Mν)ee=0 , and (ii) (Mν)ee=(Mν)eμ=0 , which can be realized by the highdimensional lepton number violating operators ℓ¯RcγμLL(DμΦ)Φ2 and ℓ¯RclR(DμΦ)2Φ2 , respectively. [...]
Published in EPJC 75 (2015) 557
10.1140/epjc/s1005201537799
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10.

Connecting neutrino masses and dark matter by highdimensional lepton number violation operator
/ Geng, ChaoQiang ; Huang, Da ; Tsai, LuHsing ; Wang, Qing
We propose a new model with the Majorana neutrino masses generated at twoloop level, in which the lepton number violation (LNV) processes, such as neutrinoless double beta decays, are mainly induced by the dimension7 LNV effective operator O 7 = l ¯ R c γ μ L L D μ Φ Φ Φ $$ {\mathcal{O}}_7={\overline{l}}_R^c{\gamma}^{\mu }{L}_L\left({D}_{\mu}\varPhi \right)\varPhi \varPhi $$ . [...]
Published in JHEP 1508 (2015) 141
10.1007/JHEP08(2015)141
arXiv:1507.03455
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