Observation of $J/ψφ$ structures consistent with exotic states from amplitude analysis of $B^+→ J/ψφK^+$ decays (Physical Review Letters, 2017)

(untitled) - Aaij, R; Adeva, B; Adinolfi, M; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Cartelle, P; Jr, A; et al.