论文标题
来自晶格QCD的激发和异国底部光谱
Excited and exotic bottomonium spectroscopy from lattice QCD
论文作者
论文摘要
我们使用晶格QCD探索激发和异国情调的底部。高度激动的状态被确定为11,000 MEV的质量，其中许多可以分为与Quark模型相匹配的超级人，而异国情调的旋转 - parge-charge-conjugation量子$ j^{pc} = 0^{+ - }确定。使用了连续体中具有良好$ J^{pc} $的单梅森操作员构造，这些构造被发现与$ j \ le4 $的重型夸克状态很好地重叠。基于晶格irreps和主要的操作员重叠的分布，将连续$ j^{pc} $分配给每个级别。识别具有主导性Gluonic组件的状态并形成具有$ j^{pc} =（0,1,1,2）^{ - +}，\，\，1^{ - } $的混合超级，约1500 meV，与地面$η_b$高约1500 meV，类似于先前的计算，与Light，nyment，nymperngness nymper，nymper，nymper，nymper，nymper，nymper，nymper，nymper和charm quark quark quark quark quark quark quark quark couark couark couark couark couark couark quark couark couark couark。
We explore the spectrum of excited and exotic bottomonia using lattice QCD. Highly excited states are identified with masses up to 11,000 MeV, many of which can be grouped into supermultiplets matching those of the quark model while exotic spin--parity--charge-conjugation quantum numbers $J^{PC}=0^{+-},\,1^{-+},\,2^{+-}$ that cannot be formed from $\bar{q}q$ alone are also identified. Single-meson operator constructions are used that have good $J^{PC}$ in the continuum, these are found to overlap well onto heavy quark states with $J\le4$. A continuum $J^{PC}$ is assigned to each level, based on the distribution amongst lattice irreps and dominant operator overlaps. States with a dominant gluonic component are identified and form a hybrid supermultiplet with $J^{PC}=(0,1,2)^{-+},\, 1^{--}$, approximately 1500 MeV above the ground-state $η_b$, similar to previous computations with light, strange and charm quark systems.
