论文标题
$ t^+_ {cc} \ to d^{*+} d^0 \toπ^+d^0d^0 $ decay宽度宽度
Triangle singularities in the $T^+_{cc}\to D^{*+}D^0\toπ^+D^0D^0$ decay width
论文作者
论文摘要
$ t^+_ {cc} \ to d^{*+} d^0 \toπ^+d^0d^0 $的衰减中所涉及的粒子的质量值表明，由于过渡顶点中的最终状态相互作用，在此中的最终状态相互作用，t^+_ {cc} {cc} {cc} \ to d^to d^d^{*+nian nian trian trian trian trian trian trian trian trian trian trian trian trian。我们讨论他们的可能作用，并表明树木的近似值用于计算衰减宽度$ t^+_ {cc} \ to（d^{*+} d^0+d^0+d^{*0} d^+）\toπ^+d^+d^0d^0d^0d^0 $，$π^0d dd^0d d d d d d d^+$ unsuer cocy at Acciption cocy cocy cocy cocy cocy cocy cocy cocy cocy cocy cocy cocipy cocipy cociperion cociption Acciption coccy的cocy coccy
The values of the masses of the particles involved in the decay of $T^+_{cc}\to D^{*+}D^0\toπ^+D^0D^0$ suggest that due to the final state interactions in the transition vertex $T^+_{cc}\to D^{*+}D^0 $ there may be triangle logarithmic singularities. We discuss their possible role and show that the tree approximation for calculating the decay widths $T^+_{cc}\to(D^{*+}D^0+D^{*0}D^+)\toπ^+D^0D^0$, $π^0D^0 D^+$, $γD^0D^+$ is quite sufficient at the current level of measurement accuracy.
