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arXiv 2108.02730hep-ph
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$T_{cc}$奇异态产生中的$D^0 D^0 π^+$质量分布

$D^0 D^0 π^+$ mass distribution in the production of the $T_{cc}$ exotic state

A. Feijoo, W. H. Liang, E. Oset

摘要:

我们执行一个单一的耦合通道的相互作用的$D^{*+} D^0, D^{*0} D^+$通道的研究,并找到一个状态几乎没有绑定,非常接近的同位旋$I=0$。我们以实验质量作为输入,得到了态的宽度和$D^0 D^0 π^+$质量分布。当使用实验论文中引用的原始数据中的$T_{cc}$态的质量时,获得的宽度是$80 \;{\rm keV}$的数量级,与该工作中给出的值相比很小。然而,当考虑到实验分辨率而对数据进行分析时获得的质量被采用时,获得的宽度约为$43 \;{\rm keV}$,并且宽度和$D^0 D^0 π^+$质量分布都与后一分析中获得的结果非常一致。

英文摘要:

We perform a unitary coupled channel study of the interaction of the $D^{*+} D^0, D^{*0} D^+$ channels and find a state barely bound, very close to isospin $I=0$. We take the experimental mass as input and obtain the width of the state and the $D^0 D^0 π^+$ mass distribution. When the mass of the $T_{cc}$ state quoted in the experimental paper from raw data is used, the width obtained is of the order of the $80 \;{\rm keV}$, small compared to the value given in that work. Yet, when the mass obtained in an analysis of the data considering the experimental resolution is taken, the width obtained is about $43 \;{\rm keV}$ and both the width and the $D^0 D^0 π^+$ mass distribution are in remarkable agreement with the results obtained in that latter analysis.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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