$T_{cc}$ pole trajectory

Abstract

We investigate the spectrum of doubly charmed tetraquark $T_{cc}$ with quantum number $I(J^P)=0(1^{+})$ using MILC's $N_f=2+1+1$ HISQ gauge ensembles at two lattice spacings. We have included diquark-antidiquark operator together with molecular and scattering operators in our analysis and varied both the heavy and light quark masses. We employ the anisotropic Clover action for heavy quarks, and $O(a)$-improved Wilson--Clover action for the light (up/down) quarks. In order to handle the non-analyticity near the Left Hand Cut we use modified Lüschers method when close to it.

Comments: 10 pages, 5 figures, PoS