A broad peaking structure is observed in the dimuon spectrum of B +→K+μ+μ- decays in the kinematic region where the kaon has a low recoil against the dimuon system. The structure is consistent with interference between the B+→K +μ+μ- decay and a resonance and has a statistical significance exceeding six standard deviations. The mean and width of the resonance are measured to be 4191-8+9 MeV/c2 and 65-16+22 MeV/c2, respectively, where the uncertainties include statistical and systematic contributions. These measurements are compatible with the properties of the ψ(4160) meson. First observations of both the decay B+→ψ (4160)K+ and the subsequent decay ψ(4160)→μ +μ- are reported. The resonant decay and the interference contribution make up 20%...
A broad peaking structure is observed in the dimuon spectrum of B+ →K+μ+μ− decays in the kinematic...
A broad peaking structure is observed in the dimuon spectrum of B+ -> K+mu(+)mu(-) decays in the kin...
A broad peaking structure is observed in the dimuon spectrum of B+ -> K+mu(+)mu(-) decays in the ...
A broad peaking structure is observed in the dimuon spectrum of B +→K+μ+μ- decays in the kinematic r...
A broad peaking structure is observed in the dimuon spectrum of B + → K + μ + μ − decays in the kine...
A broad peaking structure is observed in the dimuon spectrum of B+ → K+ μ+ μ- decays in the kinemati...
A broad peaking structure is observed in the dimuon spectrum of B+ → K+ μ+ μ− decays in the kinemati...
A broad peaking structure is observed in the dimuon spectrum of B+\u2192K+\u3bc+\u3bc 12 decays in t...
A broad peaking structure is observed in the dimuon spectrum of B+ -> K+mu(+)mu(-) decays in the kin...
A broad peaking structure is observed in the dimuon spectrum of B[superscript +]→K[superscript +]μ[s...
A broad peaking structure is observed in the dimuon spectrum of B+ →K+μ+μ− decays in the kinematic...
A broad peaking structure is observed in the dimuon spectrum of B+ -> K+mu(+)mu(-) decays in the kin...
A broad peaking structure is observed in the dimuon spectrum of B+ -> K+mu(+)mu(-) decays in the ...
A broad peaking structure is observed in the dimuon spectrum of B +→K+μ+μ- decays in the kinematic r...
A broad peaking structure is observed in the dimuon spectrum of B + → K + μ + μ − decays in the kine...
A broad peaking structure is observed in the dimuon spectrum of B+ → K+ μ+ μ- decays in the kinemati...
A broad peaking structure is observed in the dimuon spectrum of B+ → K+ μ+ μ− decays in the kinemati...
A broad peaking structure is observed in the dimuon spectrum of B+\u2192K+\u3bc+\u3bc 12 decays in t...
A broad peaking structure is observed in the dimuon spectrum of B+ -> K+mu(+)mu(-) decays in the kin...
A broad peaking structure is observed in the dimuon spectrum of B[superscript +]→K[superscript +]μ[s...
A broad peaking structure is observed in the dimuon spectrum of B+ →K+μ+μ− decays in the kinematic...
A broad peaking structure is observed in the dimuon spectrum of B+ -> K+mu(+)mu(-) decays in the kin...
A broad peaking structure is observed in the dimuon spectrum of B+ -> K+mu(+)mu(-) decays in the ...