SCOAP3 Repository 18 records found  1 - 10nextSearch took 0.01 seconds. 
1. Bosonic-seesaw portal dark matter / Ishida, Hiroyuki ; Matsuzaki, Shinya ; Yamaguchi, Yuya
We discuss a new type of Higgs-portal dark matter (DM) production mechanism, called the bosonic-seesaw portal (BSP) scenario. [...]
Published in PTEP 2017 (2017) 103B01 10.1093/ptep/ptx132
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2. A supersymmetric electroweak scale seesaw model / Chang, Jung ; Cheung, Kingman ; Ishida, Hiroyuki ; Lu, Chih-Ting ; et al
In this paper we propose a novel supersymmetric inverse seesaw model which has only one additional Z 6 symmetry. [...]
Published in JHEP 1710 (2017) 039 10.1007/JHEP10(2017)039 arXiv:1707.04374
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3. Multiple-point principle with a scalar singlet extension of the standard model / Haba, Naoyuki ; Ishida, Hiroyuki ; Okada, Nobuchika ; Yamaguchi, Yuya
We suggest a scalar singlet extension of the standard model, in which the multiple-point principle (MPP) condition of a vanishing Higgs potential at the Planck scale is realized. [...]
Published in PTEP 2017 (2017) 013B03 10.1093/ptep/ptw186 arXiv:1608.00087
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4. Naturalness and lepton number/flavor violation in inverse seesaw models / Haba, Naoyuki ; Ishida, Hiroyuki ; Yamaguchi, Yuya
We introduce three right-handed neutrinos and three sterile neutrinos, and consider an inverse seesaw mechanism for neutrino mass generation. [...]
Published in JHEP 1611 (2016) 003 10.1007/JHEP11(2016)003 arXiv:1608.07447
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5. Lepton number violation by heavy Majorana neutrino in B decays / Asaka, Takehiko ; Ishida, Hiroyuki
Heavy Majorana neutrinos are predicted in addition to ordinary active neutrinos in the models with the seesaw mechanism. [...]
Published in Physics letters B (2016) 10.1016/j.physletb.2016.10.070
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6. On neutrinoless double beta decay in the ν MSM / Asaka, Takehiko ; Eijima, Shintaro ; Ishida, Hiroyuki
We consider the neutrinoless double beta ( 0νββ ) decay in the ν MSM, in which three right-handed neutrinos with masses below the electroweak scale are additionally introduced to the Standard Model. [...]
Published in Physics letters B (2016) 10.1016/j.physletb.2016.09.044
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7. Vacuum stability and naturalness in type-II seesaw / Haba, Naoyuki ; Ishida, Hiroyuki ; Okada, Nobuchika ; Yamaguchi, Yuya
We study the vacuum stability and perturbativity conditions in the minimal type-II seesaw model. [...]
Published in EPJC 76 (2016) 333 10.1140/epjc/s10052-016-4180-z
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8. A new dynamics of electroweak symmetry breaking with classically scale invariance / Haba, Naoyuki ; Ishida, Hiroyuki ; Kitazawa, Noriaki ; Yamaguchi, Yuya
We propose a new dynamics of the electroweak symmetry breaking in a classically scale invariant version of the standard model. [...]
Published in Physics letters B (2016) 10.1016/j.physletb.2016.02.052
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9. Gauge coupling unification in a classically scale invariant model / Haba, Naoyuki ; Ishida, Hiroyuki ; Takahashi, Ryo ; Yamaguchi, Yuya
There are a lot of works within a class of classically scale invariant model, which is motivated by solving the gauge hierarchy problem. [...]
Published in JHEP 1602 (2016) 058 10.1007/JHEP02(2016)058 arXiv:1511.02107
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10. Bosonic seesaw mechanism in a classically conformal extension of the Standard Model / Haba, Naoyuki ; Ishida, Hiroyuki ; Okada, Nobuchika ; Yamaguchi, Yuya
We suggest the so-called bosonic seesaw mechanism in the context of a classically conformal U(1)B−L extension of the Standard Model with two Higgs doublet fields. [...]
Published in Physics letters B (2016) 10.1016/j.physletb.2016.01.050
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