605 research outputs found

    On the Phase of B0B^0--B0ˉ\bar {B^0} Mixing Matrix Elements in the SUSY Standard Model

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    It is shown that the complex phase of B0B^0--B0ˉ\bar {B^0} mixing matrix element is same as that of the standard model one up to the minor correction of the order of (mc/mt)2(m_c/m_t)^2 or less in the SUSY standard model. This conclusion is valid as far as the Yukawa coupling constants are perturbative and realistic, and can be available for other realistic models where generation mixing and CP violation are solely due to Yukawa interaction among quarks and Higgs doublets.Comment: 8 pages, LaTeX file, figures appended in uuencoded gzipped EPS forma

    Updates of WRW_R effects on CP angles determination in B decays

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    The recently observed CP violation in B decay and BB-\ovar{B} mixing data put constraints on the mass of WRW_R and the parameters of the right-handed current quark mixing matrix VRV^R in SU(2)L×SU(2)R×U(1)SU(2)_L \times SU(2)_R\times U(1) gauge model. It is shown that the allowed region of parameters are severely restricted for light WRW_R with mass on the order of 1 TeV. There exist sets of parameters which can accommodate large CP violation as measured by Belle, sin2ϕ1exp1\sin2\phi_1|_{exp}\simeq 1, for MWR=110M_{W_R}=1 \sim 10 TeV.Comment: 11pages, 19 figures, LaTeX2

    Chiral Lagrangian with higher resonances and flavour SU(3) SU(3) breaking

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    A chiral Lagrangian with SU(3) SU(3) breaking and higher resonances is proposed. In this model, the SU(3) SU(3) breaking structure in vector-pseudoscalar sector is realized with the decay constants of pseudoscalar mesons and the masses of vector mesons used as inputs. We examine whether the resulting SU(3) SU(3) breaking effect in the charge radii of pseudoscalar mesons is consistent with the experimental facts.Comment: 29 pages, REVTEX(ver.3), DPNU-93-3

    New Physics and CP Angles Measurement at B Factory

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    We have analyzed how much the CPCP angles to be measured at B factories can deviate from the geometrical ones defined in unitarity triangle under the existence of new physics. The measurements are given in rephasing invariant form. If KM matrix is not a 3×33\times 3 and unitary matrix, ϕ~1\tilde\phi_1 and ϕ~3\tilde\phi_3 is affected, and the value of ϕ~3\tilde\phi_3 depends on the decay mode. The deviation is constrained to be less than the experimental precision attained in the next decade by the available data of the magnitude of KM matrix elements. Deviation of the sum of three angles from π\pi cannot be detected unless new physics contributes significantly to bb decay or DD meson system.Comment: 11 pages, 1 figure in eps format, LaTeX, epsfig.st

    Emergency TEVAR for Complicated Acute Type B Aortic Dissection

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    Stent-grafting for a thoracic aortic aneurysm ruptured into the right pleural cavity

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    AbstractEur J Vasc Endovasc Surg 25, 185–187 (2003

    Study of BDπB\to D^{**} \pi decays

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    We investigate the production of the novel PP-wave mesons D0D^{*}_{0} and D1(D1)D^{\prime}_{1} (D_{1}), identified as JP=0+J^{P}=0^+ and 1+1^+, in heavy BB meson decays, respectively. With the heavy quark limit, we give our modelling wave functions for the scalar meson D0D^{*}_{0}. Based on the assumptions of color transparency and factorization theorem, we estimate the branching ratios of BD0πB\to D^{*}_{0} \pi decays in terms of the obtained wave functions. Some remarks on D1()D^{(\prime)}_{1} productions are also presented.Comment: 16 pages, 2 figures, Revtex4, to be published in Phys. Rev.
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