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arXiv 0807.2589hep-phhep-ex
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衰变模式中的新观测量anti-B --> anti-K*0 l+ l-

New observables in the decay mode anti-B --> anti-K*0 l+ l-

U. Egede, T. Hurth, J. Matias, M. Ramon, W. Reece

摘要:

我们讨论了从衰变反B-->反K *0 l+ l-的角分布中可获得的大量可观测量。在低双轻子质量区,我们基于QCD因子化方法对所有观测量进行了非线性光学分析,并给出了Λ/mb修正的估计。此外,我们还讨论了它们对新物理的敏感性。我们基于全角度拟合方法探索了LHCb(10 fb^-1)和Super-LHCb(100 fb^-1)的实验灵敏度,并探索了对右手电流的灵敏度。我们还表明,前面讨论的横向振幅A_T^(1)不能在LHCb实验或未来的B工厂实验中测量,因为它需要测量末态粒子的自旋。

英文摘要:

We discuss the large set of observables available from the angular distributions of the decay anti-B --> anti-K*0 l+ l-. We present a NLO analysis of all observables based on the QCD factorization approach in the low-dilepton mass region and an estimate of Λ/m_b corrections. Moreover, we discuss their sensitivity to new physics. We explore the experimental sensitivities at LHCb (10 fb^-1) and Super-LHCb (100 fb^-1) based on a full-angular fit method and explore the sensitivity to right handed currents. We also show that the previously discussed transversity amplitude A_T^(1) cannot be measured at the LHCb experiment or at future B factory experiments as it requires a measurement of the spin of the final state particles.

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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