在HLS模型中加入一个破坏U（3）/SU（3）/SU（2）对称性的机制，产生一个动力学矢量介子混合，我们用全局拟合的方法成功地描述了e + e-> pi + pi-，e + e->（pi 0/eta）gamma和e + e-> pi 0 pi + pi-湮灭通道的截面.一个扩展这一全球性的适合，以包括也从τ衰变的双介子光谱，考虑到所有报告的信息，其统计和系统误差。当在全局拟合框架内分析tau数据行为时，还检查了占rho+光谱相对于rho 0的线形失真的模型。一个表明，一个成功的帐户，e + e-湮没数据和τ谱可以同时达到。然后，详细讨论了非微扰强子对μ介子g-2的贡献。结果表明，所有的e + e-数据一起考虑，允许改进和动机估计的a_μ（π + π-），π + π-环的贡献μ子g-2;例如，在0.630和0.958 GeV之间积分，我们得到a_mu（pi + pi-）= 359.62 +-1.62（单位为10 ^{-10}），当前不确定度提高了40%。各种tau样本在全局拟合过程的背景下的影响导致得出以下结论：ALEPH、BELLE和CLEO数据样本揭示了不同的线形失真。依赖于上述数据的全局拟合，还提供了pi + pi-、pi 0 gamma、eta gamma和pi 0 pi + pi-对a_mu的贡献的有动机的估计，其不确定性最小。这些估计值基于各种全局拟合配置，每种配置都产生良好的概率。
英文摘要：
Relying on the Hidden Local Symmetry (HLS) model equipped with a mechanism breaking the U(3)/SU(3)/SU(2) symmetries and generating a dynamical vector meson mixing, it has been shown that a global fit successfully describes the cross sections for the e+ e- -> pi+ pi-, e+ e- -> (pi0/eta) gamma and e+ e- -> pi0 pi+ pi- annihilation channels. One extends this global fit in order to include also the dipion spectra from the tau decay, taking into account all reported information on their statistical and systematic errors. A model accounting for lineshape distortions of the rho+- spectrum relative to rho0 is also examined when analyzing the tau data behavior within the global fit framework. One shows that a successful account for e+ e- annihilation data and tau spectra can be simultaneously reached. Then, issues related with non--perturbative hadronic contributions to the muon g-2 are examined in details. It is shown that all e+ e- data considered together allow for improved and motivated estimates for the a_mu(pi+ pi-), the pi+ pi- loop contribution to the muon g-2; for instance, integrated between 0.630 and 0.958 GeV, we find a_mu(pi+ pi-)= 359.62 +- 1.62 (in units of 10^{-10}), a 40% improvement of the current uncertainty. The effects of the various tau samples in the context of a global fit procedure leads to conclude that different lineshape distortions are revealed by the ALEPH, BELLE and CLEO data samples. Relying on global fits to the data quoted above, one also provides motivated estimates of the pi+ pi-, pi0 gamma, eta gamma and pi0 pi+ pi- contributions to a_mu up to 1 GeV with the smallest possible uncertainties. These estimates are based on various global fit configurations, each yielding a good probability.
Analysis of B_{C} --> D_{s}^{*}l^{+}l^{-} in the Standard Model Beyond Third Generation
The weak decays of B_{c} --> D_{s} ^{*}l^{+}l^{-} (l=mu,tau) are investigated in the Standard Model with fourth generation (SM4). Taking fourth generation quark mass m_{t'} of about 300 to 600 GeV with the CKM matrix elements V_{t'b} ^{*} V_{t's} in the range (0.03-1.2)*10^{-2} and using the new CP odd phase ( phi_{sb} ) to be 90^{o} the analysis of decay rates, forward-backward asymmetries, lepton polarization asymmetries and the helicity fractions of D_{s} ^{*} meson in B_{c} --> D_{s} ^{*}l^{+}l^{-} (l=mu,tau) is made. It is shown that the values of these physical observables are greatly in…
