SCOAP3 Repository 56 records found  1 - 10nextendSearch took 0.03 seconds. 
1. Left-handed color-sextet diquark in the kaon system / Chen, Chuan-Hung ; Nomura, Takaaki
We investigate whether a color-sextet scalar diquark (H6) coupling to the left-handed quarks contributes to the ΔS=2 process. [...]
Published in Physical Review D 99 (2019) 10.1103/PhysRevD.99.115006
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2. A one-loop neutrino mass model with SU (2) L multiplet fields / Nomura, Takaaki ; Okada, Hiroshi
We propose a one-loop neutrino mass model with several SU(2)L multiplet fermions and scalar fields in which the inert feature of a scalar to realize the one-loop neutrino mass can be achieved by the cancellation among Higgs couplings thanks to non-trivial terms in the Higgs potential and to present it in a simpler way. [...]
Published in Nuclear Physics B (2019) 10.1016/j.nuclphysb.2019.114621
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3. b→ sμ + μ − anomalies and related phenomenology in U 1 B 3 − x μ L μ − x τ L τ $$ \mathrm{U}{(1)}_{{\mathrm{B}}_3-{\mathrm{x}}_{\mu }{\mathrm{L}}_{\mu }-{\mathrm{x}}_{\tau }{\mathrm{L}}_{\tau }} $$ flavor gauge models / Ko, P. ; Nomura, Takaaki ; Yu, Chaehyun
We propose a generation dependent lepton/baryon gauge symmetry, U 1 B 3 − x μ L μ − x τ L τ ≡ U 1 X $$ \mathrm{U}{(1)}_{B_3-{x}_{\mu }{L}_{\mu }-{x}_{\tau }{L}_{\tau }}\equiv \mathrm{U}{(1)}_X $$ (with x μ + x τ = 1 for anomaly cancellation), as a possible solution for the b → sμ + μ − anomalies. [...]
Published in JHEP 1904 (2019) 102 10.1007/JHEP04(2019)102 arXiv:1902.06107
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4. Inverse seesaw model with large SU (2) L multiplets and natural mass hierarchy / Nomura, Takaaki ; Okada, Hiroshi
We propose an inverse seesaw model with large SU(2)L multiplet fields which realizes natural mass hierarchies among neutral fermions. [...]
Published in Physics letters B 792 (2019) 424-429 10.1016/j.physletb.2019.04.006
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5. Dark matter and B-meson anomalies in a flavor dependent gauge symmetry / Hutauruk, Parada T. P. ; Nomura, Takaaki ; Okada, Hiroshi ; Orikasa, Yuta
A possibility of explaining the anomalies in the semileptonic B-meson decay BK*μμ¯ has been explored in the framework of the gauged U(1)μτ symmetry. [...]
Published in Physical Review D 99 (2019) 10.1103/PhysRevD.99.055041 arXiv:1901.03932
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6. Linear seesaw model with hidden gauge symmetry / Nomura, Takaaki ; Okada, Hiroshi
We propose a natural realization of a linear seesaw model with hidden gauge symmetry in which SU(2)L triplet fermions and one extra Higgs singlet, doublet, and quartet scalar are introduced. [...]
Published in Physical Review D 99 (2019) 10.1103/PhysRevD.99.055033 arXiv:1806.07182
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7. Inverse seesaw model with a natural hierarchy at the TeV scale / Nomura, Takaaki ; Okada, Hiroshi
We propose a new kind of inverse seesaw model without any additional symmetries. [...]
Published in Physical Review D 99 (2019) 10.1103/PhysRevD.99.055027 arXiv:1807.04555
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8. ϵ K and ϵ ′/ ϵ in a diquark model / Chen, Chuan-Hung ; Nomura, Takaaki
Based on the calculations using the lattice QCD by the RBC-UKQCD collaboration and a large N c dual QCD, the resulting ϵ ′ /ϵ , which is less than the experimental data by more than a 2 σ in the standard model (SM), suggests the necessity of a new physics effect. [...]
Published in JHEP 1903 (2019) 009 10.1007/JHEP03(2019)009 arXiv:1808.04097
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9. Radiative neutrino mass in an alternative U (1) B − L gauge symmetry / Nomura, Takaaki ; Okada, Hiroshi
We propose a neutrino model in which neutrino masses are generated at one loop level and three right-handed fermions have non-trivial charges under U(1)B−L gauge symmetry in no conflict with anomaly cancellation. [...]
Published in Nuclear Physics B 941 (2019) 586-599 10.1016/j.nuclphysb.2019.02.025
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10. Neutrino mass in a gauged L μ  −  L τ model / Chen, Chuan-Hung ; Nomura, Takaaki
We study the origin of neutrino mass through lepton-number violation and spontaneous U(1)Lμ−Lτ symmetry breaking. [...]
Published in Nuclear Physics B 940 (2019) 292-311 10.1016/j.nuclphysb.2019.01.016
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