论文标题
新观察到的$υ（10753）$是带有标量nonet Exchange的手性夸克模型中的tetraquark州
The newly observed $Υ(10753)$ as a tetraquark state in a chiral quark model with scalar nonet exchange
论文作者
论文摘要
最近，在$ e^{+} e^{+} e^{+} e^{ - } \ rightArrowω{bj的 @χ_{bj} $中，Belle \ uppercase \ explianfter {\ romannumeral2}首先报道了新的共振$ωχ_{bj} $。鉴于出生的横截面与先前报道的$υ（10753）$相似，因此新的共振$ωχ_{bj} $可能是$υ（10753）$。 From the perspectives of traditional $Υ(nS)$ meson and exotic tetraquark $b\bar{q}q\bar{b}$ state with the $J^{PC}$ = $1^{--}$, we tentatively investigate the $Υ(10753)$ by solving Schrödinger equation in the framework of the chiral quark model.介子的数值结果表明，$υ（5s）$的质量最高为10.86 GEV，不适合$υ（10753）$的候选人。另一方面，不仅是两种分子结构（$ b \ bar {b} $ - $ q \ bar {q} $，$ b \ bar {q} $ - $ q \ bar {b} $），而且\ da〜结构（$ \ bar {b} \ bar {q} $ - $ quuse ins in contra intra intra intra intra 方法。当使用实量表方法（稳定方法）执行全渠道耦合时，我们将获得稳定的共振$^1R_ {1}（10770）$（$^{2S+1} r_j $），并具有diquark-Antidiquark State的重要组成部分。结合$^1R_ {1}（10770）$的质量和宽度，它可能是实验$υ（10753）$的良好候选人。此外，还获得了几个共振状态，从10.82 GEV到10.96 GEV，预计将在将来的实验中进一步验证。
Recently, Belle\uppercase\expandafter{\romannumeral2} Collaboration firstly reported a new resonance $ωχ_{bJ}$ in the processes of $e^{+}e^{-} \rightarrow ωχ_{bJ}$ at center-of-mass energies $\sqrt{s}=10.745$ GeV. Given the Born cross section similar with the previously reported $Υ(10753)$, the new resonance $ωχ_{bJ}$ may have be $Υ(10753)$. From the perspectives of traditional $Υ(nS)$ meson and exotic tetraquark $b\bar{q}q\bar{b}$ state with the $J^{PC}$ = $1^{--}$, we tentatively investigate the $Υ(10753)$ by solving Schrödinger equation in the framework of the chiral quark model. Numerical results for the meson show that the mass of $Υ(5S)$ is up to 10.86 GeV and unsuitable for the candidate of $Υ(10753)$. On the other hand, not only the two kinds of molecular structure ($b\bar{b}$-$q\bar{q}$, $b\bar{q}$-$q\bar{b}$) but also the \da~structure ($\bar{b}\bar{q}$-$qb$) are considered into our tetraquark calculation with the help of Gaussian expansion method. When a fully-channel coupling is performed using the real-scaling method (stabilization method), we get a stable resonance $^1R_{1}(10770)$ ( $^{2S+1}R_J$ ) with a great component of the diquark-antidiquark state. Combined with the mass and width of $^1R_{1}(10770)$, it may be a good candidate for experimental $Υ(10753)$. Besides, several resonance states ranging from 10.82 GeV to 10.96 GeV are obtained, which are expected to be further verified in future experiments.
