58 research outputs found
The transformation of policy toward Japan from the Nixon to Ford administrations : focusing on government officials' views on Japan and Japan's position in the grand strategy
論説(Article)application/pdfdepartmental bulletin pape
U.S.-Soviet nuclear arms control negotiations and Japan : focusing on the Strategic Arms Limitation Talks I in the Nixon administration
SALT Iに、日本は米国によってどのように位置づけられたのか。本稿はこの問いに答えようとする外交史研究である。結論として、SALT交渉で日本は、①内容に影響を与えられなかった同盟国、②西側の一員としてみなすための「コマ」、③協定結実のための口実として位置づけられた。またSALT政策では、核武装の危険性がある国として国務省に位置づけられた一方、ホワイトハウスは中ソに寝返る可能性がある国として位置づけていたことが明らかになった。研究ノート(Note)application/pdfdepartmental bulletin pape
U.S. foreign policy on SALT II during the Nixon-Ford administration : continuity and change in Japan's position
本稿では、ニクソン・フォード政権に焦点を当て、SALTに対する日本の主張や態度をどのように受容し、対応していたのか、またSALT交渉において日本はどのように言及されていたのかという問いに対し、外交史研究のアプローチを用いて回答を試みる。結論として、基本的にSALT政策においてもSALT交渉においてもSALT I期からの継続が見られたことが明らかとなる一方で、その質および位置づけられる文脈に変容があったことが明らかとなる。Focusing on the Nixon-Ford Administration, this paper attempts to answer the questions of how it accepted and responded to Japan's claims and attitudes toward SALT, and how Japan was mentioned in the SALT negotiations, using a diplomatic history research approach. In conclusion, while it is clear that both SALT policy and SALT negotiations continued in essence from the SALT I period, it is also clear that there were changes in the quality and context in which they were positioned.論説(Article)application/pdfdepartmental bulletin pape
Possible solution to the Li-7 problem by the long lived stau
Modification of standard big-bang nucleosynthesis is considered in the minimal supersymmetric standard model to resolve the excessive theoretical prediction of the abundance of primordial lithium 7. We focus on the stau as a next-lightest superparticle, which is long lived due to its small mass difference with the lightest superparticle. It provides a number of additional decay processes of Li-7 and Be-7. A particularly important process is the internal conversion in the stau-nucleus bound state, which destroys the Li-7 and Be-7 effectively. We show that the modification can lead to a prediction consistent with the observed abundance of Li-7.textapplication/pdfjournal articl
Measurement of branching fraction and time-dependent CP asymmetry parameters in B^0 → D^*+D^*-K^{0}_{S}decays
We present a measurement of the branching fraction and time-dependent CP violation parameters for B^0 → D^*+D^*-K^{0}_{S} decays. These results are obtained from a 414 fb^{-1} data sample that contains 449×10^6 B\bar{B} pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. We obtain the branching fraction, B(B^0→D^*+D*^-K^{O}_{S})= [3.4±0.4(stat)±0.7(syst)]×10^-3, which is in agreement with the current world average. We also obtain an upper limit on the product branching fraction for a possible two-body decay, B(B^0 → D_s1^+(2536)D^*-)B(D_s1^+(2536)→ D^*+K^{O}_{S})s^+, where s^±[equivalent]m2(D^*±K^{0}_{S}), we extract the CP violation parameters, J_c/J_0=0.60^{+0.25}_{-0.28}(stat)±0.08(syst), 2J_s1/J_0sin2φ_1=-0.17^{+0.42}_{-0.42}(stat)±0.09(syst), 2J_s2/J_0cos2φ_1=-0.23^{+0.43}_{-0.41}(stat)±0.13(syst). A large value of J_c/J_0 would indicate a significant resonant contribution from a broad unknown D_s^**+ state. Although the sign of the factor, 2J_s2/J_0, can be deduced from theory, no conclusion can be drawn regarding the sign of cos2φ_1 given the errors.journal articl
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