论文标题
带有$π$ Meson的双重重量$ξ_{qq} $ baryons的强耦合常数
Strong Coupling Constants of the Doubly Heavy $ Ξ_{QQ} $ Baryons with $ π$ Meson
论文作者
论文摘要
双重迷人的$ξ_{cc}^{++}（ccu）$ state是PDG中唯一列出的baryon，在实验中发现了。 LHCB的合作越来越接近发现第二个双重迷人的Baryon $ξ_{cc}^{+}（+}（ccd）$，因此，对许多方面的双重迷人/底部巴里昂的调查都非常重要，这可能非常重要，这可能使我们不仅可以帮助我们在新发现的状态上获得众多繁重的型号，而且还可以在Quark search中获得其他成员的搜索，以备受推荐的搜索。在这种情况下，我们通过轻锥QCD总规则来研究$ξ_{cc}^{+（+）} $ baryons和$π^{0（\ pm）} $ mesons之间的强耦合常数。使用$ξ_{cc}^{+（+）} $ baryons和$π$梅森的分布振幅（das）的插值电流的一般形式，我们提取耦合常量的值$ g_ {ξ_{ξ_{CC} {cc} cc}之一。我们还扩展了分析以计算具有$π$介子的B-Partner Baryons之间的强耦合常数，并提取强耦合$ g_ {ξ_{ξ_{bb}ξ_{bb}π} $的值。据观察，在底部通道中研究的耦合的值大约是诱人的通道的4倍。这项研究的结果可能有助于实验组，分析与强烈多重偶联常数相关的数据。
The doubly charmed $Ξ_{cc}^{++} (ccu)$ state is the only listed baryon in PDG, which was discovered in the experiment. The LHCb collaboration gets closer to discovering the second doubly charmed baryon $Ξ_{cc}^{+} (ccd)$, hence the investigation of the doubly charmed/bottom baryons from many aspects is of great importance that may help us not only get valuable knowledge on the nature of the newly discovered states, but also in the search for other members of the doubly heavy baryons predicted by the quark model. In this context, we investigate the strong coupling constants among the $Ξ_{cc}^{+(+)}$ baryons and $π^{0(\pm)}$ mesons by means of light cone QCD sum rule. Using the general forms of the interpolating currents of the $Ξ_{cc}^{+(+)}$ baryons and the distribution amplitudes (DAs) of the $π$ meson, we extract the values of the coupling constants $g_{Ξ_{cc} Ξ_{cc} π}$. We extend our analyses to calculate the strong coupling constants among the b-partner baryons with $π$ mesons, as well, and extract the values of the strong couplings $g_{Ξ_{bb} Ξ_{bb} π}$. It is observed that the values of the couplings under study in bottom channels are about 4 times greater than those of the charmed channels. The results of this study may help experimental groups in the analyses of the data related to the strong coupling constants among the hadronic multiplets.
