The 2830 MeV excess in LHCb B+ -> D*- D_s+ pi+ data is consistent with the predicted J=2 tetraquark T_cs2, with angular moments proposed to confirm the spin.
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Evidence of the open-flavor tetraquark $T_{c\bar{s}2}$ in the process $B^+\to D^{*-}D_s^+\pi^+$
The 2830 MeV excess in LHCb B+ -> D*- D_s+ pi+ data is consistent with the predicted J=2 tetraquark T_cs2, with angular moments proposed to confirm the spin.