arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2105.06261hep-ph
收藏

$\sqrt{s}=$ 7和13 TeV的$pp$碰撞中奇异态X(3872)的研究

Investigation of exotic state X(3872) in $pp$ collisions at $\sqrt{s}=$7 and 13 TeV

Hong-ge Xu, Zhi-Lei She, Dai-Mei Zhou, Liang Zheng, Xiao-Lin Kang, Gang Chen, Ben-Hao Sa

摘要:

利用动力学约束相空间聚并模型,研究了分别在$\sqrt{s}=7$和13 TeV的$pp$碰撞中,由部分子和强子级联模型(PACIAE)产生的具有$|y|<1$和$p_T < 15.5$ GeV/c的强子末态的奇异态$X(3872)$的产生.这里假定$X(3872)$由束缚态$D\bar {D^*}$组成,它可以形成四夸克态、类核态和分子态三种可能的结构。预测了三种不同结构$X(3872)$的产率。给出了三种不同结构$X(3872)$的横向动量分布和快度分布。对于三种不同的$X(3872)$结构,横向动量和快度分布有很大的差别。

英文摘要:

We have used the dynamically constrained phase space coalescence model to study the production of the exotic state $X(3872)$ based on the hadronic final states generated by the parton and hadron cascade model (PACIAE) with $|y|<1$ and $p_T < 15.5$ GeV/c in $pp$ collisions at $\sqrt{s}=7$ and 13 TeV, respectively. Here the $X(3872)$ is assumed to consist of bound state $D\bar {D^*}$, which can form three possible structures for the tetraquark state, the nucleus-like state, and the molecular state. The yields of three different structures $X(3872)$ were predicted. The transverse momentum distribution and the rapidity distribution of three different structures $X(3872)$ are also presented. Sizable difference can be found in the transverse momentum and rapidity distributions for the three different $X(3872)$ structures.

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。

↑