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Recently, a new doubly charged tetraquark $T^{a}_{c\bar{s}0}(2900)^{++}$ andits neutral partner $T^{a}_{c\bar{s}0}(2900)^0$ at the invariant mass spectrumof $\pi{}D_s$ were observed by the LHCb Collaboration. According to itsproperties, such as the mass and decay width, the$T^{a}_{c\bar{s}0}(2900)^{++/0}$ have been suggested to be a compactmulti-quark state or a hadron molecule. In order to distinguish the variousinterpretations of the $T^{a}_{c\bar{s}0}(2900)^{++/0}$, we investigate thepossibility to study the $\bar{T}^{a}_{c\bar{s}0}(2900)$ [the antiparticle of$T^{a}_{c\bar{s}0}(2900)$] by kaon-induced reactions on a proton target in aneffective Lagrangian approach. The production mechanism is characterized by the$t$-channel $D$ meson exchange. Our theoretical approach is based on theassumption that $\bar{T}^{a}_{c\bar{s}0}(2900)$ can be either a$K^{*}D^{*}-D_s^{*}\rho$ molecule or a compact tetraquark state. Using thecoupling constants of the $\bar{T}^{a}_{c\bar{s}0}(2900)$ to $KD$ channelobtained from molecule or compact tetraquark picture of the$\bar{T}^{a}_{c\bar{s}0}(2900)$, we compute the cross-sections for the process$K^{-}n\to{}\bar{T}^{a}_{c\bar{s}0}(2900)^{--}\Lambda^{+}_c$. The $\bar{K}N$initial state interaction mediated by Pomeron and Reggeon exchanges is alsoincluded, which reduces the production of the $\bar{T}^{a}_{c\bar{s}0}(2900)$.Our calculations show that whether $\bar{T}^{a}_{c\bar{s}0}(2900)$ is amolecule or a compact tetraquark state, the cross-sections for the$K^{-}n\to{}\bar{T}^{a}_{c\bar{s}0}(2900)^{--}\Lambda^{+}_c$ reaction are ofsimilar magnitude, ranging from approximately 0.075 nb to 0.270 nb.

Production of the newly observed $\bar{T}_{c\bar{s}0}$ by kaon-induced reactions on a proton/neutron target