Resonant structures in B0 -K+ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using pp collision data corresponding to 3fb-1 collected with the LHCb detector. The data cannot be described with K+Ï€- resonances alone, which is confirmed with a model-independent approach. A highly significant Z(4430)- φπ- component is required, thus confirming the existence of this state. The observed evolution of the Z(4430)- amplitude with the Ïâ€Ï€- mass establishes the resonant nature of this particle. The mass and width measurements are substantially improved. The spin parity is determined unambiguously to be 1+. © 2014 CERN, for the LHCb Collaboration
Resonant structures in $B^0\to\psi'\pi^-K^+$ decays are analyzed by performing a four-dimensional fi...
Resonant structures in $B^0\to\psi'\pi^-K^+$ decays are analyzed by performing a four-dimensional fi...
Resonant structures in B-0 -> psi'pi K--(+) decays are analyzed by performing a four-dimensional fit...
Resonant structures in B0 -K+ decays are analyzed by performing a four-dimensional fit of the decay ...
Resonant structures in B^0→ψ^'π^-K^+ decays are analyzed by performing a four-dimensional fit of the...
Resonant structures in B^{0}→ψ^{'}π^{-}K^{+} decays are analyzed by performing a four-dimensional fi...
Resonant structures in B 0 → ψ ′ π − K + decays are analyzed by performing a four-dimensional fit of...
Resonant structures in B0→ψ′π−K+ decays are analyzed by performing a four-dimensional fit of the dec...
Resonant structures in B[superscript 0] → ψ[superscript ′]π[superscript −]K[superscript +] decays ar...
Resonant structures in $B^0\to\psi'\pi^-K^+$ decays are analyzed by performing a four-dimensional fi...
Resonant structures in $B^0\to\psi'\pi^-K^+$ decays are analyzed by performing a four-dimensional fi...
Resonant structures in B-0 -> psi'pi K--(+) decays are analyzed by performing a four-dimensional fit...
Resonant structures in B0 -K+ decays are analyzed by performing a four-dimensional fit of the decay ...
Resonant structures in B^0→ψ^'π^-K^+ decays are analyzed by performing a four-dimensional fit of the...
Resonant structures in B^{0}→ψ^{'}π^{-}K^{+} decays are analyzed by performing a four-dimensional fi...
Resonant structures in B 0 → ψ ′ π − K + decays are analyzed by performing a four-dimensional fit of...
Resonant structures in B0→ψ′π−K+ decays are analyzed by performing a four-dimensional fit of the dec...
Resonant structures in B[superscript 0] → ψ[superscript ′]π[superscript −]K[superscript +] decays ar...
Resonant structures in $B^0\to\psi'\pi^-K^+$ decays are analyzed by performing a four-dimensional fi...
Resonant structures in $B^0\to\psi'\pi^-K^+$ decays are analyzed by performing a four-dimensional fi...
Resonant structures in B-0 -> psi'pi K--(+) decays are analyzed by performing a four-dimensional fit...