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A three-loop neutrino model with global U(1) symmetry
Hatanaka, H.,Nishiwaki, K.,Okada, H.,Orikasa, Y. North Holland 2015 Nuclear Physics, Section B Vol.894 No.-
We study a three-loop induced neutrino model with a global U(1) symmetry at TeV scale, in which we naturally accommodate a bosonic dark matter candidate. We discuss the allowed regions of masses and quartic couplings for charged scalar bosons as well as the dark matter mass on the analogy of the original Zee-Babu model, and show the difference between them. We also discuss that the possibility of the collider searches in a future like-sign electron liner collider could be promising.
Hatanaka, Takaaki,Ohzono, Shinji,Park, Mirae,Sakamoto, Kotaro,Tsukamoto, Shogo,Sugita, Ryohei,Ishitobi, Hiroyuki,Mori, Toshiyuki,Ito, Osamu,Sorajo, Koichi,Sugimura, Kazuhisa,Ham, Sihyun,Ito, Yuji American Society for Biochemistry and Molecular Bi 2012 The Journal of biological chemistry Vol.287 No.51
Cathodoluminescence spectroscopic study of the boron-nitrogen co-doping diamond films
Yuko Hatanaka,Sadao Takeuchi,Koji Iwasaki,Hidenori Gamo,Kiyoharu Nakagawa,Toshihiro Ando,Mikka Nishitani-Gamo 제어로봇시스템학회 2008 제어로봇시스템학회 국제학술대회 논문집 Vol.2008 No.10
Co-doping diamond is of scientific and technologically interest because a new electrical and/or optical property is expected to obtain. In this study, we have carried out a simultaneous addition of diborane and nitrogen in the gas phase for the growth of co-doping diamonds by microwave plasma-assisted chemical vapor deposition (MPCVD) method. We measured the cathodoluminescence (CL) spectra of the co-doping diamond films. To investigate the effect of boron-nitrogen co-doping addition on the CL spectra, we compared the CL spectra of boron-nitrogen co-doping diamonds with those of nitrogen-doped diamonds. The results revealed that the addition of boron suppressed the nitrogen incorporation into the CVD diamonds.