1.

Probing CPviolating Higgs sectors via the precision measurement of coupling constants
/ Aoki, Mayumi ; Hashino, Katsuya ; Kaneko, Daiki ; Kanemura, Shinya ; et al
We study how the effects of the CP violation can be observed indirectly by precision measurements of Higgs boson couplings at a future Higgs factory such as the International Linear Collider. [...]
Published in PTEP 2019 (2019) 053B02
10.1093/ptep/ptz038
arXiv:1808.08770
Fulltext: PDF XML PDF (PDFA);

2.

Selecting models of firstorder phase transitions using the synergy between collider and gravitationalwave experiments
/ Hashino, Katsuya ; Jinno, Ryusuke ; Kakizaki, Mitsuru ; Kanemura, Shinya ; et al
We investigate the sensitivity of future spacebased interferometers such as LISA and DECIGO to the parameters of new particle physics models which drive a firstorder phase transition in the early Universe. [...]
Published in Physical Review D 99 (2019)
10.1103/PhysRevD.99.075011
arXiv:1809.04994
Fulltext: XML PDF;

3.

Single Higgs production in association with a photon at electronpositron colliders in extended Higgs models
/ Kanemura, Shinya ; Mawatari, Kentarou ; Sakurai, Kodai
We study associated Higgs production with a photon at electronpositron colliders, ${e}^{+}{e}^{}\to h\gamma $, in various extended Higgs models, such as the inert doublet model, the inert triplet model, and the two Higgs doublet model. [...]
Published in Physical Review D 99 (2019)
10.1103/PhysRevD.99.035023
arXiv:1808.10268
Fulltext: XML PDF;

4.

Gravitational waves from phase transitions in models with charged singlets
/ Ahriche, Amine ; Hashino, Katsuya ; Kanemura, Shinya ; Nasri, Salah
We investigate the effect of extra singlets on the electroweak phase transition (EWPT) strength and the spectrum of the corresponding gravitational waves (GWs). [...]
Published in Physics letters B 789 (2019) 119126
10.1016/j.physletb.2018.12.013
Fulltext: PDF XML PDF (PDFA);

5.

Gravitational waves from first order electroweak phase transition in models with the U(1) X gauge symmetry
/ Hashino, Katsuya ; Kakizaki, Mitsuru ; Kanemura, Shinya ; Ko, Pyungwon ; et al
We consider a standard model extension equipped with a dark sector where the U(1) X Abelian gauge symmetry is spontaneously broken by the dark Higgs mechanism. [...]
Published in JHEP 1806 (2018) 088
10.1007/JHEP06(2018)088
arXiv:1802.02947
Fulltext: XML PDF (PDFA);

6.

Loop effects on the Higgs decay widths in extended Higgs models
/ Kanemura, Shinya ; Kikuchi, Mariko ; Mawatari, Kentarou ; Sakurai, Kodai ; et al
In order to identify the Higgs sector using future precision data, we calculate the partial decay widths of the discovered Higgs boson with the mass of 125 GeV into fermion pairs and gaugeboson pairs with oneloop electroweak and oneloop QCD corrections in various extended Higgs models, such as the Higgs singlet model and four types of two Higgs doublet models. [...]
Published in Physics letters B (2018)
10.1016/j.physletb.2018.06.035
Fulltext: PDF XML PDF (PDFA);

7.

Oneloop corrections to the Higgs selfcouplings in the singlet extension
/ Kanemura, Shinya ; Kikuchi, Mariko ; Yagyu, Kei
We investigate predictions on the triple Higgs boson couplings with radiative corrections in the model with an additional real singlet scalar field. [...]
Published in Nuclear Physics B (2017)
10.1016/j.nuclphysb.2017.02.004
Fulltext: PDF XML PDF (PDFA);

8.

LHC 750 GeV diphoton excess in a radiative seesaw model
/ Kanemura, Shinya ; Nishiwaki, Kenji ; Okada, Hiroshi ; Orikasa, Yuta ; et al
We investigate a possibility for explaining the recently announced 750 GeV diphoton excess by the ATLAS and CMS experiments at the CERN LHC in a model with multiple doubly charged particles, that was originally suggested for explaining tiny neutrino masses through a threeloop effect in a natural way. [...]
Published in PTEP 2016 (2016) 123B04
10.1093/ptep/ptw164
arXiv:1512.09048
Fulltext: PDF XML PDF (PDFA);

9.

Gravitational waves and Higgs boson couplings for exploring first order phase transition in the model with a singlet scalar field
/ Hashino, Katsuya ; Kakizaki, Mitsuru ; Kanemura, Shinya ; Ko, Pyungwon ; et al
We calculate the spectrum of gravitational waves originated from strongly first order electroweak phase transition in the extended Higgs model with a real singlet scalar field. [...]
Published in Physics letters B (2016)
10.1016/j.physletb.2016.12.052
Fulltext: XML PDF PDF (PDFA);

10.

Testing neutrino mass generation mechanisms from the lepton flavor violating decay of the Higgs boson
/ Aoki, Mayumi ; Kanemura, Shinya ; Sakurai, Kodai ; Sugiyama, Hiroaki
We investigate how observations of the lepton flavor violating decay of the Higgs boson ( h→ℓℓ′ ) can narrow down models of neutrino mass generation mechanisms, which were systematically studied in Refs. [...]
Published in Physics letters B (2016)
10.1016/j.physletb.2016.10.055
Fulltext: XML PDF PDF (PDFA);
