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    • Observation of Bs0→χc1ϕ decay and study of B0→χc1,2K∗0 decays

    Nuclear Physics（2013）

    Cited 4|Views456
    Abstract
    The first observation of the decay Bs0rightarrowchic1phi and a study of B0rightarrowchic1,2K∗0 decays are presented. The analysis is performed using a dataset, corresponding to an integrated luminosity of 1.0 fb−1, collected by the LHCb experiment in pp collisions at a centre-of-mass energy of 7 TeV. The following ratios of branching fractions are measured: \begin{equation*} \begin{array}{lll} \dfrac{\cal{B}(B^0_s\rightarrow\chi_{c1}\phi)}{\cal{B}(B^0_s\rightarrow J/\psi\phi)} \u0026=\u0026 (18.9 \pm1.8\,(stat)\pm1.3\,(syst)\pm0.8\,(\cal{B})) \times 10^{-2}, \nonumber \\ \noalign{\vskip 3pt} \dfrac{\cal{B}(B^0\rightarrow\chi_{c1}K^{*0})}{\cal{B}(B^0\rightarrow J/\psiK^{*0})} \u0026=\u0026 (19.8 \pm1.1\,(stat)\pm1.2\,(syst)\pm0.9\,(\cal{B})) \times 10^{-2}, \nonumber \\ \noalign{\vskip 3pt} \dfrac{\cal{B}(B^0\rightarrow\chi_{c2}K^{*0})}{\cal{B}(B^0\rightarrow\chi_{c 1}K^{*0})} \u0026=\u0026 (17.1 \pm5.0\,(stat)\pm1.7\,(syst)\pm1.1\,(\cal{B})) \times 10^{-2}, \nonumber \\ \noalign{\vskip 3pt} \end{array} \end{equation*} \noindent where the third uncertainty is due to the limited knowledge of the branching fractions of chicrightarrowJ/psigamma modes.
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    Related Papers

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    R Aaij,B Adeva,M Adinolfi,A Affolder, Z Ajaltouni,S Akar, J Albrecht, F Alessio, M Alexander,S Ali, G Alkhazov,P Alvarez Cartelle,
    European Physical Journal C 2014

    被引用42

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    Chat Paper
    【要点】：本文首次观测到 $B^0_s\rightarrow\chi_{c1}\phi$ 衰变，并研究了 $B^0\rightarrow\chi_{c1,2}K^{*0}$ 衰变，测量了相关的分支比。
    

    【方法】：通过分析 LHCb 实验在质子-质子对撞中收集到的数据集，该数据集对应于 7 TeV 中心质心能量下的 1.0 fb$^{-1}$ 积分亮度。
    

    【实验】：实验使用了 LHCb 实验的数据，测量得到了 $B^0_s\rightarrow\chi_{c1}\phi$ 和 $B^0\rightarrow\chi_{c1,2}K^{*0}$ 的分支比，分别为 $(18.9 \pm1.8,(stat)\pm1.3,(syst)\pm0.8,(cal{B})) \times 10^{-2}$，$(19.8 \pm1.1,(stat)\pm1.2,(syst)\pm0.9,(cal{B})) \times 10^{-2}$，和 $(17.1 \pm5.0,(stat)\pm1.7,(syst)\pm1.1,(cal{B})) \times 10^{-2}$。