论文标题
双重重型tetraquarks $ qq \ bar {n} \ bar {q} $ with $ j^{p} = 1^{+} $
Masses of doubly heavy tetraquarks $QQ\bar{n}\bar{q}$ with $J^{P}=1^{+}$
论文作者
论文摘要
我们应用QCD总规则的方法来研究双重繁重的四夸克状态，$ qq \ bar {q} \ bar {n} $，带有旋转 - 帕特$ j^{p} = 1^{+} $ and strangeness $ s = 0，-1 $，使用涉及BoREL和Threhest parameters的仔细估计。通过考虑到多种浓缩量，doubly底部和迷人的tetraquarks具有iSospin $ i = 0,1/2，1 $的质量，可精确地计算出$ 10 $。与两个重型的介子阈值相比，我们发现，所有非压力双重的tetraquarks和与$ j_ {3} $相关联的双重链接的tetraquarks，与$ J {3} $，$ j^{p} {p} = 1^{+} $持续稳定地与两个下的messsiphand，同时又稳定地降低了doutra的强烈衰减。 $ j_ {2} $在强衰减方面是不稳定的。顺便说一句，还给出了双重底部四夸克的弱衰减宽度。
We apply the method of QCD sum rules to study the doubly heavy tetraquark states $QQ\bar{q}\bar{n}$ with spin-parity $J^{P}=1^{+}$ and strangeness $S=0, -1$ using careful estimates of the Borel and threshold parameters involved. Masses of the doubly bottom and charmed tetraquarks with isospin $I=0,1/2, 1$ are computed precisely via taking into account multifarious condensates up to dimension $10$. Comparing with the two-heavy meson thresholds, we find that all nonstrange doubly-bottom tetraquarks and a doubly-charmed tetraquarks associted with $J_{3}$ with $J^{P}=1^{+}$ are stable against strong decay into two bottom mesons while a doubly-charmed tetraquarks associated with current $J_{2}$ is unstable against strong decay. By the way, weak decay widths of the doubly bottom tetraquarks are also given.
