6 research outputs found

    Observation of B+→ψ(3770)K+

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    journal articl

    Measurement of branching fraction and time-dependent CP asymmetry parameters in B^0 → D^*+D^*-K^{0}_{S}decays

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    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

    The MET 7 : Its correlation with the university entrance examinations (english part) 2012 and 2013

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    日本人大学生の英語能力を測定するために、牧・和佐田・橋本(2003)は、CD を聞きながら、問題用紙の72 箇所の空欄に、4 文字以下の英単語を埋めていく、5 分間の英語テスト、最小英語テスト(Minimal English Test, MET)を開発した。しかしながら、なぜ4 文字以下の英単語を選んだのかという問題が生じたため、この問題を解決するために、牧、他7 名(2012)は、6単語置きに空欄を設けた、6 単語置き版最小英語テスト(Minimal English Test 6B, MET 6B)を開発した。本研究では、新たに7 単語置き版最小英語テスト(Minimal English Test 7, MET7)を開発し、大学入試センターの英語試験とMET 7 の得点が統計的有意な相関があるかどうかを調査した。回帰分析の結果、(1)MET 7 の得点と2012 年大学入試センター試験の英語総合点の間には、統計的有意な中程度の相関があり(n= 61, r=.53, p<.001)、(2)MET 7 の得点と2013年大学入試センター試験の英語総合点の間には、統計的有意な中程度の相関があった(n= 61,r=.56, p<.001)ことを報告する。そして、MET は、手軽に利用できる英語能力測定テストであり、学習者の自律学習に貢献する可能性を持っていることを示唆する。departmental bulletin pape

    The architecture of the module that performs the sequence-to-structure processing

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    <p><b>Copyright information:</b></p><p>Taken from "A Hybrid Genetic-Neural System for Predicting Protein Secondary Structure"</p><p></p><p>BMC Bioinformatics 2005;6(Suppl 4):S3-S3.</p><p>Published online 1 Dec 2005</p><p>PMCID:PMC1866382.</p><p></p

    Epitaxial growth and electronic structure of a C-60 derivative prepared by using a solution spray technique

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    [出版社版]We demonstrate and analyze the epitaxial film formation of a molecular material that cannot be evaporated in vacuum due to thermal decomposition. A solution of the material is sprayed onto single crystalline van der Waals surfaces using a pulse valve under controlled vapor pressure of the solvent. Monolayer epitaxial films are obtained and we propose that the growth is mediated by liquid ultrathin films formed on the surface. Molecular arrangement and electronic structure of C-60(CH_3)_5H films are studied by reflection high energy electron diffraction and ultraviolet photoelectron spectroscopy, respectively. The present technique will be useful to study the electronic structure of recently synthesized molecular materials. (C) 2001 American Institute of Physics
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