论文标题
全下和全链的tetraquark表明的衰减行为
Decay behaviors of the fully-bottom and fully-charm tetraquark states
论文作者
论文摘要
我们研究了diquark-antidiquark图片中全底三夸克状态的衰减行为,并通过FIFEZ重排计算其相对分支比率。我们的结果表明,$ c =+ $状态可以在$μ^+μ^ - υ(1s)$和$μ^+μ^ - υ(2S)$通道中,其相对分支比率$ \ MATHCAL {B}(b}(x \ x \ x \ x x \ toμ-μμμ到(2S) / \ Mathcal calcal {1 s)$ n n n n of b} $ n n of。我们的结果还表明,$ c = - $状态可以在$μ^+μ^ - η_b(1s)$和$μ^+μ^ - η_b(2s)$通道中具有相似的相对分支比率$ \ Mathcal $ \ Mathcal {B}(b}(x \toμb(x \toμB(2S)) / \ Mathcal cancal, μη_B(1s))\大约0.4 $。我们还重新分析了完全稳定的tetraquark状态,并将$ x(6900)的$衰减研究到$ j/ψψ(2s)$通道中,以获得相对分支比率$ \ MATHCAL {b}(x \ to j/are)/\ MATHCAL {B}(x \ to j/cAl)(x \ to J/x \ to j/j/c)。
We study the decay behaviors of the fully-bottom tetraquark states within the diquark-antidiquark picture, and calculate their relative branching ratios through the Fierz rearrangement. Our results suggest that the $C=+$ states can be searched for in the $μ^+ μ^- Υ(1S)$ and $μ^+ μ^- Υ(2S)$ channels with the relative branching ratio $\mathcal{B}(X \to μμΥ(2S)) / \mathcal{B}(X \to μμΥ(1S)) \approx 0.4$. Our results also suggest that the $C=-$ states can be searched for in the $μ^+ μ^- η_b(1S)$ and $μ^+ μ^- η_b(2S)$ channels with the similar relative branching ratio $\mathcal{B}(X \to μμη_b(2S)) / \mathcal{B}(X \to μμη_b(1S)) \approx 0.4$. We also reanalysis the fully-charm tetraquark states, and study the $X(6900)$ decay into the $J/ψψ(2S)$ channel to obtain the relative branching ratio $\mathcal{B}(X \to J/ψψ(2S)) / \mathcal{B}(X \to J/ψJ/ψ) \approx 0.1$.