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Nishimura, Shoichiro*; Torii, Hiroyuki*; Fukao, Yoshinori*; Ito, Takashi; Iwasaki, Masahiko*; Kanda, Sotaro*; Kawagoe, Kiyotomo*; Kawall, D.*; Kawamura, Naritoshi*; Kurosawa, Noriyuki*; et al.
Physical Review A, 104(2), p.L020801_1 - L020801_6, 2021/08
Times Cited Count:13 Percentile:83.13(Optics)Yamaguchi, Yasuhiro; Yamanaka, Nodoka*
Physical Review D, 103(1), p.013001_1 - 013001_20, 2021/01
Times Cited Count:34 Percentile:95.26(Astronomy & Astrophysics)We evaluate the electric dipole moment (EDM) of charged leptons in the standard model. We first prove that, at the quark-gluon level, it is suppressed due to the GIM mechanism. We then calculate the hadronic long distance contribution generated by vector mesons at one-loop level. The = 1 weak hadronic interaction is derived using the factorization, and the strong interaction is modeled by the hidden local symmetry framework. We find that the EDMs of charged leptons obtained from this hadronic mechanism are much larger than the perturbative four-loop level quark-gluon process, by several orders of magnitude.
Yamaguchi, Yasuhiro; Yamanaka, Nodoka*
Physical Review Letters, 125(24), p.241802_1 - 241802_7, 2020/12
Times Cited Count:30 Percentile:88.26(Physics, Multidisciplinary)We reevaluate the electric dipole moment (EDM) of charged leptons in the standard model using hadron effective models. We find unexpectedly large EDM generated by the hadron level long-distance effect, , , and cm, with an error bar of 70%, exceeding the conventionally known four-loop level elementary contribution by several orders of magnitude.
Strasser, P.*; Abe, Mitsushi*; Aoki, Masaharu*; Choi, S.*; Fukao, Yoshinori*; Higashi, Yoshitaka*; Higuchi, Takashi*; Iinuma, Hiromi*; Ikedo, Yutaka*; Ishida, Katsuhiko*; et al.
EPJ Web of Conferences, 198, p.00003_1 - 00003_8, 2019/01
Times Cited Count:13 Percentile:99.06(Quantum Science & Technology)Onitsuka, Go*; Yanagi, Tetsuo*; Uno, Itsushi*; Kawamura, Hideyuki; Yoon, J.-H.*; Yamanaka, Yasuhiro*
Engan Kaiyo Kenkyu, 50(1), p.45 - 51, 2012/08
A seasonal variation of phytoplankton concentration is remarkable in the surface layer of the Japan Sea, because of a seasonal variation of solar radiation and nutrient. While, it is suggested that atmospheric perturbation such as typhoon effects a lower level ecosystem in the surface layer. An effect of atmospheric perturbation on the lower level ecosystem was estimated by means of an ocean general circulation model and a lower level ecosystem model in this study. Results of numerical experiments suggested that the atmospheric perturbation enhances a primary production in the Japan Sea.
Suzuki, Tetsuya*; Yamanaka, Keisuke*; Ishino, Mayuko*; Shinohara, Yasuhiro*; Nagai, Kensuke*; Tsuru, Eiji*; Xu, P. G.
Tetsu To Hagane, 98(6), p.262 - 266, 2012/06
Okabe, Kazuhiko*; Shibata, Yasuhiro*; Mashimo, Toru*; Yuasa, Hisako*; Yamanaka, Hidetoshi*; Asano, Masaharu; Yoshida, Masaru
Drug Development and Industrial Pharmacy, 26(5), p.559 - 562, 2000/05
Times Cited Count:1 Percentile:5.63(Chemistry, Medicinal)no abstracts in English
Onitsuka, Go*; Yanagi, Tetsuo*; Uno, Itsushi*; Kawamura, Hideyuki; Yoon, J.-H.*; Yamanaka, Yasuhiro*
no journal, ,
It is suggested that seasonal variation of phytoplankton concentration in the surface layer is remarkable in the Japan Sea and it is additionally reported that increase of phytoplankton concentration is found due to synoptic scale meteorological perturbation. In this study, effect of synoptic scale meteorological perturbation and deposition of nitrogen from atmosphere on primary production in the Japan Sea is estimated in numerical experiments. Short period oscillation of primary production due to synoptic scale meteorological perturbation is dominant between April and November in the numerical experiments. It is suggested that the primary production in the Japan Sea is supported by supply of nutrient due to synoptic scale meteorological perturbation by about 5% and that from atmosphere by about 2%, respectively.