We investigate the spectrum of doubly charmed tetraquark Tcc with quantum number I(JP)=0(1+) using MILC's Nf=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 L\"uschers method when close to it.
@article{arxiv.2603.01259,
title = {$T_{cc}$ pole trajectory},
author = {Protick Mohanta and Srijit Paul and Subhasish Basak},
journal= {arXiv preprint arXiv:2603.01259},
year = {2026}
}