论文标题
从众所周知的张量膜到未知的轴向张膜膜
From well-known tensor mesons to yet unknown axial-tensor mesons
论文作者
论文摘要
While the ground-state tensor ($J^{PC}=2^{++}$) mesons $a_{2}(1320)$, $K_{2}^{\ast}(1430)$, $f_{2}(1270)$, and $f_{2}^{\prime}(1525)$ are well known experimentally and form an almost ideal Quark-antiquark国家的非交易，其手性伙伴，地面轴向tens子（$ j^{pc} = 2^{ - } $）的梅森斯人的结算率很差：只有Kaonic成员$ k_2（1820）$ of nonet of nont of int of int of and of state_2 丢失的。在这里，我们在手性模型中研究张量和轴向张量介子的质量，强和辐射衰减，将其联系起来：已建立的张量介子用于测试模型并确定其手性伴侣，轴向调节器的各种预测，并获得了各种预测。将结果与当前的晶格QCD结果以及其他理论方法进行了比较，并表明地下轴向张量膜有望相当广泛，矢量质量符号模式是最突出的衰减模式，其次是张量张紧张量表。但是，在正在进行的和/或将来的实验中，他们的实验发现似乎是可能的。
While the ground-state tensor ($J^{PC}=2^{++}$) mesons $a_{2}(1320)$, $K_{2}^{\ast}(1430)$, $f_{2}(1270)$, and $f_{2}^{\prime}(1525)$ are well known experimentally and form an almost ideal nonet of quark-antiquark states, their chiral partners, the ground-states axial-tensor ($J^{PC}=2^{--}$) mesons are poorly settled: only the kaonic member $K_2(1820)$ of the nonet has been experimentally found, whereas the isovector state $ρ_2$ and two isoscalar states $ω_2$ and $ϕ_2$ are still missing. Here, we study masses, strong, and radiative decays of tensor and axial-tensor mesons within a chiral model that links them: the established tensor mesons are used to test the model and to determine its parameters, and subsequently various predictions for their chiral partners, the axial-tensor mesons, are obtained. The results are compared to current lattice QCD outcomes as well as to other theoretical approaches and show that the ground-state axial-tensor mesons are expected to be quite broad, the vector-pseudoscalar mode being the most prominent decay mode followed by the tensor-pseudoscalar one. Nonetheless, their experimental finding seems to be possible in ongoing and/or future experiments.
