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Comprehending isospin breaking effects of X(3872) in a Friedrichs-model-like scheme

机译:在类似Friedrichs模型的方案中理解X(3872)的同位旋破坏作用

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Recently, we have shown that the X ( 3872 ) state can be naturally generated as a bound state by incorporating the hadron interactions into the Godfrey-Isgur quark model using a Friedrichs-like model combined with the quark pair creation model, in which the wave function for the X ( 3872 ) as a combination of the bare c c ˉ state and the continuum states can also be obtained. Under this scheme, we now investigate the isospin-breaking effect of X ( 3872 ) in its decays to J / ψ π + π ? and J / ψ π + π ? π 0 . By coupling its dominant continuum parts to J / ψ ρ and J / ψ ω through the quark rearrangement process, one could obtain the reasonable ratio of B ( X ( 3872 ) → J / ψ π + π ? π 0 ) / B ( X ( 3872 ) → J / ψ π + π ? ) ? ( 0.58 – 0.92 ) . It is also shown that the D ˉ D * invariant mass distributions in the B → D ˉ D * K decays could be understood qualitatively at the same time. This scheme may provide more insight into the enigmatic nature of the X ( 3872 ) state.
机译:最近,我们已经表明,通过使用类似于Friedrichs模型和夸克对创建模型的组合,将强子相互作用并入Godfrey-Isgur夸克模型,可以自然地将X(3872)状态生成为束缚状态。 X(3872)的函数也可以作为裸ccˉ状态和连续状态的组合而获得。在此方案下,我们现在研究X(3872)衰减到J /ψπ+π?时的同位旋断裂效应。和J /ψπ+π? π0。通过夸克重排过程将其主要连续部分耦合到J /ψρ和J /ψω,可以获得合理的B(X(3872)→J /ψπ+π?π0)/ B(X (3872)→J /ψπ+π? (0.58 – 0.92)。还表明,在B→DˉD * K衰变中DˉD *不变质量分布可以同时定性地理解。该方案可以提供对X(3872)状态的神秘本质的更多见解。

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