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arXiv 1411.7233hep-ph
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标准模型更新和新的物理分析与酉三角拟合

Standard Model updates and new physics analysis with the Unitarity Triangle fit

Adrian Bevan, Marcella Bona, Marco Ciuchini, Denis Derkach, Enrico Franco, Vittorio Lubicz, Guido Martinelli, Fabrizio Parodi, Maurizio Pierini, Carlo Schiavi, … 展开作者

Adrian Bevan, Marcella Bona, Marco Ciuchini, Denis Derkach, Enrico Franco, Vittorio Lubicz, Guido Martinelli, Fabrizio Parodi, Maurizio Pierini, Carlo Schiavi, Luca Silvestrini, Viola Sordini, Achille Stocchi, Cecilia Tarantino, Vincenzo Vagnoni

摘要:

我们在此介绍UTfit协作在标准模型(SM)及其他模型中进行的酉三角(UT)分析的更新。不断更新的风味结果有助于提高几个约束的精度,并通过CKM参数和SM预测的全局拟合。我们还扩展了UT分析,以调查新的物理(NP)的影响$ΔF=2$过程。最后,基于NP约束,我们得到了最一般的$ΔF=2$有效哈密顿量的系数上界。这些上限可以被转换为有助于这些低能量有效相互作用的NP尺度上的下限。

英文摘要:

We present here the update of the Unitarity Triangle (UT) analysis performed by the UTfit Collaboration within the Standard Model (SM) and beyond. Continuously updated flavour results contribute to improving the precision of several constraints and through the global fit of the CKM parameters and the SM predictions. We also extend the UT analysis to investigate new physics (NP) effects on $ΔF=2$ processes. Finally, based on the NP constraints, we derive upper bounds on the coefficients of the most general $ΔF=2$ effective Hamiltonian. These upper bounds can be translated into lower bounds on the scale of NP that contributes to these low-energy effective interactions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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