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A novel approach is proposed to probe the nature of the double charmtetraquark through the measurement of production asymmetry between$T_{\bar{c}\bar{c}}^-$ and $T_{cc}^+$ in $pp$ collisions. When comparing twotheoretical pictures, the compact tetraquark and molecular pictures, we findthat the compact tetraquark picture exhibits a significantly larger productionasymmetry and an order of magnitude lower total cross section compared to themolecular picture, enabling the unambiguous determination of the tetraquark'sinternal structure. Additionally, distinctive differences in the transversemomentum ($p_\mathrm{T}$) and rapidity ($y$) distributions of$T_{\bar{c}\bar{c}}^-$ and $T_{cc}^+$ cross sections emerge, particularly at$p_\mathrm{T}\approx 2~\mathrm{GeV}$ and $y\approx \pm 6$. The differencebetween particles and antiparticles in a large rapidity region is attributed tothe behavior of the residual $ud$ diquarks within the proton. Our work extendsto the exploration of other double heavy tetraquark candidates, offering aversatile approach to advance our understanding of exotic hadronic states inparticle physics.

Revealing the mystery of the double charm tetraquark in $pp$ collision