The low-lying light tetraquark states with quantum numbers $J^{P}=0^{+ }$, $1^{+}$ and $2^{+}$

Abstract

The low-lying light tetraquark states are investigated in the non-relativistic quark model (NRQM) including the pseudoscalar meson exchange, where two different confinement potential schemes, the Cornell potential and the linear potential, are employed, along with the instanton-induced interaction serving as the residual spin-dependent interaction. The numerical results show agreement with masses of $f_{0}(500)$, $f_{0}(1370)$, $f_{0}(1500)$, $f_{0}(2020)$, $f_{0}(2200)$, $h_{1}(1170)$, $h_{1}(1595)$, $h_{1}(1900)$, $h_{1}(1965)$, $h_{1}(2215)$, $f_{2}(1430)$, $f_{2}(1640)$, $f_{2}(1810)$, $f_{2}(2010)$, $f_{2}(2150)$, $a_{0}(980)$, $a_{0}(1450)$, $a_{0}(1950)$, $a_{1}(1260)$, $a_{1}(1640)$, $a_{2}(1700)$, $K^{*}_{0}(1430)$, $K^{*}_{0}(1950)$, $K_{1}(1270)$, $K_{1}(1440)$, $K_{1}(1650)$, and $K^{*}_{2}(1980)$. The results shed light on the spectrum of these mesons and offer guidande to search for the tetraquarks in the future.