The Unitarity Triangle on the First Quadrant and the Quark Mass Matrices in the Nearest-Neighbor Interaction Basis

The unitarity triangle on the first quadrant in the $\rho -\eta$ plane is discussed in the framework of the quark mass matrices in the NNI basis. If the quark mass matrices of the up-type is the Fritzsch one and the down-type is the one proposed by Branco et al., respectively, one gets the unitarity triangle with the vertex on the first quadrant. This simple model may be a candidate of the quark mass matrix ansatze, if the allowed region of the vertex of the unitarity triangle is restricted in the first quadrant by future experiments.Comment: 7 pages, 1 figur

ドイツ法における宣誓要求制度の意義と機能(2)-証明責任を負わない当事者の事案解明義務を考察するための基礎作業として-

論

ドイツ法における宣誓要求制度の意義と機能(1) : 証明責任を負わない当事者の事案解明義務を考察するための基礎的作業として

論

ドイツ法における宣誓要求制度の意義と機能(3・完)-証明責任を負わない当事者の事案解明義務を考察するための基礎的作業として-

論

New Possibility of Solving the Problem of Lifetime Ratio τ(Λb)/τ(Bd)\tau (\Lambda_b) / \tau (B_d)

We discuss the problem of the large discrepancy between the observed lifetime ratio of $\Lambda_b$ to $B_d$ and the theoretical prediction obtained by the heavy quark effective theory. A new possibility of solving this problem is proposed from the viewpoint of operator product expansion and the lifetime ratio of $\Omega_b$ to $B_d$ is predicted.Comment: LaTeX file (11 pages). The result is improved by including the 1/\Delta^3 order correction