Motivated by the recent observation of TcsΛ0β(2900)0 and
TcsΛ0β(2900)++ in the DsβΟ invariant mass distributions, we
investigate DβKβ interactions in a coupled-channel approach. We
show that the relativistic corrections could be significant for the energy far
away from the threshold. Within the hidden local symmetry formalism, a sizable
attraction interaction is found in the J=0 isospin triplet sector that can
form a bound or a virtual state, which is consistent with the experimentally
observed TcsΛ0β(2900). By reproducing a DsββΟ-DβKβ
bound/virtual state with the pole mass equal to that of the
TcsΛ0β(2900) measured by LHCb in the sector (I,J)=(1,0), we
determine the unknown parameter in the loop function, and then search for
possible poles in the sectors of I=1, J=1, 2 and I=0, J=0, 1, 2. The
predicted resonances provide a useful reference for the future experimental
studies of the (C,S)=(1,1) systems and can be also helpful to unravel the
nature of the TcsΛ0β(2900).10Comment: 10 pages, 6 figures, 3 table