Unlocking the Secrets of Exotic Tetraquarks
![The decay of a resonance, potentially [latex]Z_c(4430)[/latex], into both two-body states like [latex]D^{<i>+} \bar{D}_{2}^{</i>0}[/latex] and [latex]\psi(2S)\pi^{+}[/latex], and three-body combinations of [latex]D^{<i>+}D^{-}\pi^{+}[/latex], [latex]D^{</i>+}D^{<i>-}\pi^{+}[/latex], and [latex]D^{</i>+} \bar{D}^{<i>0}\pi^{0}[/latex], offers a comparative shape analysis-scaling the [latex]\psi(2S)\pi^{+}[/latex] distribution to match the peak height of the [latex]D^{</i>+} \bar{D}_{2}^{*0}[/latex] mode-to determine the coupling constant [latex]g_{\psi'}[/latex] and reveal underlying patterns in particle decay.](https://arxiv.org/html/2601.20740v1/x8.png)
New research delves into the composition and decay of the Zc(4430) and Zc(4200) states, shedding light on the fundamental forces binding these unusual particles.
Science
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