arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1010.4082hep-ex
收藏

Tevatron中的Bs衰变

Bs Decays at the Tevatron

Gavril Giurgiu

摘要:

我们目前的测量的分支比和无魅力的Bs的Phi Phi衰变的偏振振幅使用对应于2.9/fb的积分亮度,收集的CDF实验在Tevatron的数据。相对于标准化模式Bs到J/Psi Phi测量Bs到Phi Phi衰变中的分支比为B(Bs到Phi Phi)/B(Bs到J/Psi Phi)= [1.78 +/- 0.14(stat)+/- 0.20(syst)] x 10^{-2}。使用B(Bs对J/Psi Phi)的实验值,我们确定Bs对Phi Phi的分支比B(Bs对Phi Phi)= 2.40 +/- 0.21(stat)+/- 0.27(syst)+/- 0.82(BR)] x 10^{-5}。在该分析中首次测量了极化分数,发现其为:|A_0| ^2 = 0.348 +/- 0.041(统计学)+/- 0.021(系统学)|A_parallel| ^2 = 0.287 +/- 0.043(统计学)+/- 0.011(系统学)|A_perp| ^2 = 0.365 +/- 0.044(统计学)+/-0.027(系统)。

英文摘要:

We present measurements of the branching ratio and of the polarization amplitudes in charmless Bs to Phi Phi decays using data corresponding to 2.9/fb of integrated luminosity, collected by the CDF experiment at the Tevatron. The branching ratio in Bs to Phi Phi decays is measured relative to the normalization mode Bs to J/Psi Phi$ to be B(Bs to Phi Phi)/B(Bs to J/Psi Phi) = [1.78 +/- 0.14 (stat) +/- 0.20 (syst)] x 10^{-2}. Using the experimental value of B(Bs to J/Psi Phi) we determine the Bs to Phi Phi branching ratio B(Bs to Phi Phi) = 2.40 +/- 0.21(stat) +/- 0.27(syst) +/- 0.82 (BR)] x 10^{-5}. The polarization fractions are measured for the first time in this analysis and found to be: |A_0|^2 = 0.348 +/- 0.041 (stat) +/- 0.021 (syst) |A_parallel|^2 = 0.287 +/- 0.043 (stat) +/- 0.011 (syst) |A_perp|^2 = 0.365 +/- 0.044 (stat) +/- 0.027 (syst).

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。

↑