arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1010.5089hep-ph
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酉三角分析的更新

Update of the Unitarity Triangle Analysis

UTfit Collaboration, A. Bevan, M. Bona, M. Ciuchini, D. Derkach, E. Franco, V. Lubicz, G. Martinelli, F. Parodi, M. Pierini, C. Schiavi, L. Silvestrini, V. Sord… 展开作者

UTfit Collaboration, A. Bevan, M. Bona, M. Ciuchini, D. Derkach, E. Franco, V. Lubicz, G. Martinelli, F. Parodi, M. Pierini, C. Schiavi, L. Silvestrini, V. Sordini, A. Stocchi, C. Tarantino, V. Vagnoni

摘要:

我们目前的状态么正三角形分析(UTA),在标准模型(SM)和超越,与实验和理论输入更新的ICHEP 2010年会议。在SM中,我们发现所有约束之间的一般一致性只在BR(B -> τ nu),sin(2 β)和τ_K中留下了一些张力(UTA预测和实验测量之间)的空间。在超越SM的UTA中,我们允许(Delta F)=2过程中的新物理(NP)效应。在B_s- \bar B_s混合中,NP在2.9 sigma水平上的暗示被目前的更新所证实,其中包括关于双μ子电荷不对称性的新D 0结果,但不包括新的CDF测量phi_s,因为可能性尚未公布。

英文摘要:

We present the status of the Unitarity Triangle Analysis (UTA), within the Standard Model (SM) and beyond, with experimental and theoretical inputs updated for the ICHEP 2010 conference. Within the SM, we find that the general consistency among all the constraints leaves space only to some tension (between the UTA prediction and the experimental measurement) in BR(B -> tau nu), sin(2 beta) and epsilon_K. In the UTA beyond the SM, we allow for New Physics (NP) effects in (Delta F)=2 processes. The hint of NP at the 2.9 sigma level in the B_s-\bar B_s mixing turns out to be confirmed by the present update, which includes the new D0 result on the dimuon charge asymmetry but not the new CDF measurement of phi_s, being the likelihood not yet released.

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