论文标题
B和B_S衰变中的X（3872）Tetraquarks
The X(3872) tetraquarks in B and B_s decays
论文作者
论文摘要
我们讨论B和B_S衰减中X（3872）的最新数据如何谈论其四夸克的性质。已建立的衰减模式，包括CMS的最新观察，通过混合了两个准脱位，不可避免的中性状态。相同的机制还解释了X衰变中的同胞违规行为，并强烈表明，潜伏的带电伴侣必须在J/PSI Rho^pm中具有很小的分支分数，远低于当前的实验限制。此外，还得出了对J/PSI Omega最终状态的新预测。发现最新的实验观察结果是对最简单的四夸克图的推动力，并呼吁对带电的Rho Meson进行确定的，深入的研究。
We discuss how the latest data on X(3872) in B and B_s decays speak about its tetraquark nature. The established decay pattern, including the up to date observations by CMS, are explained by the mixing of two quasi-degenerate, unresolvable, neutral states. The same mechanism also explains isospin violations in X decays and strongly suggests that the lurking charged partners are required to have very small branching fractions in J/psi rho^pm, well below the current experimental limits. In addition, a new prediction on the decay into J/psi omega final states is attained. The newest experimental observations are found to give thrust to the simplest tetraquark picture and call for a definitive, in-depth study of final states with charged rho mesons.
