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 2604.03047hep-ph
收藏

所有重夸克四夸克态的不同味

All-heavy tetraquarks with different flavors

Hunan Normal University(湖南师范大学);Tianjin University of Technology(天津理工大学)

Wei-Xiang Wang, Lin-Qin Xie, Jun-Jie Liu, Zhi-Biao Liang, Ming-Sheng Liu, Xian-Hui Zhong

AI总结:

本文基于非相对论势夸克模型,利用显式相关高斯方法精确计算了不同味的四重重夸克态质量谱,预测了1S态的质量范围,并评估了其衰变特性。

摘要:

在非相对论势夸克模型框架下,我们采用显式相关高斯方法对不同味的四重重夸克态(bbb̄c̄, cc̄b̄, bb̄c̄c, bc̄b̄c)的质量谱进行了精确计算。获得了1S态的完整质量谱。对于bbb̄c̄, cc̄b̄, bb̄c̄c和bc̄b̄c系统,1S态被预测质量范围分别为约(16.06,16.14)、(9.65,9.74)、(12.89,12.94)和(12.75,12.99) GeV。此外,通过利用获得的质量和波函数,在夸克交换模型下评估了其衰变特性。结果表明,不同味四重重夸克态的1S态可能具有窄的衰变宽度,范围从几个十分之一到几MeV。一些不同味的四重重夸克态可能在LHC的最佳衰变通道中具有良好的探测潜力,如ΥJ/ψ、ΥB_c^-和J/ψB_c^+。

英文摘要:

In a nonrelativistic potential quark model framework, we carry out a precise calculation of the mass spectrum of the all-heavy tetraquarks with different flavors, $bb\bar{b}\bar{c}$, $cc\bar{c}\bar{b}$, $bb\bar{c}\bar{c}$, and $bc\bar{b}\bar{c}$, by adopting the explicitly correlated Gaussian method. A complete mass spectrum for the $1S$ states is obtained. For the $bb\bar{b}\bar{c}$, $cc\bar{c}\bar{b}$, $bb\bar{c}\bar{c}$, and $bc\bar{b}\bar{c}$ systems, the $1S$ states are predicted to lie in the mass ranges of $ \sim(16.06,16.14)$, $\sim(9.65,9.74)$, $\sim(12.89,12.94)$, and $\sim(12.75,12.99)$~GeV, respectively. Moreover, by using the obtained masses and wave functions, we evaluate the fall-apart decay properties within a quark-exchange model. The results show that the $1S$ states of the all-heavy tetraquarks with different flavors may have narrow fall-apart decay widths, which range from a few tenths to several MeV. Some all-heavy tetraquarks with different flavors could be search for at LHC in their optimal fall-apart decay channels, such as $ΥJ/ψ$, $ΥB_c^-$, and $J/ψB_c^+$.

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。

↑