Decays of Bˉ0(s) and Bˉ0 mesons into J/ψπ+π−π+π− final states, produced in pp collisions at the LHC, are investigated using data corresponding to an integrated luminosity of 3 fb−1 collected with the LHCb detector. Bˉ0(s)→J/ψf1(1285) decays are seen for the first time, and the branching fractions are measured. Using these rates, the f1(1285) mixing angle between strange and non-strange components of its wave function in the qq− structure model is determined to be ±(24.0+3.1+0.6−2.6−0.8)∘. Implications on the possible tetraquark nature of the f1(1285) are discussed
Decays of [¯ over B][0 over s] and [¯ over B][superscript 0] mesons into J/ψ π[superscript +]π[super...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B(s)(0) and B(0) mesons into J/psi pi+pi-pi+pi- final states, produced in pp collisions at...
Decays of Bˉ0(s) and Bˉ0 mesons into J/ψπ+π−π+π− final states, produced in pp collisions at the LHC,...
Decays of B(s)(0) and B(0) mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the L...
Decays of B(s)(0) and B(0) mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the L...
Decays of ¯B0s and ¯B0 mesons into J/ψ π+π−π+π− final states, produced in pp collisions at the LHC, ...
Decays of anti-B0s and anti-B0 mesons into J/ψ π+ π− π+ π− final states, produced in pp collisions a...
decays and measurement of the f1(1285) mixing angle The LHCb collaboration† Decays of B0s and B 0 me...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B\u304s0 and B\u3040 mesons into J/\u3c8 \u3c0+\u3c0-\u3c0+\u3c0- final states, produced i...
Decays of Bs and B0 mesons into J/\psi \pi +\pi -\pi +\pi - final states, produced in pp collisions ...
Decays of [¯ over B][0 over s] and [¯ over B][superscript 0] mesons into J/ψ π[superscript +]π[super...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B(s)(0) and B(0) mesons into J/psi pi+pi-pi+pi- final states, produced in pp collisions at...
Decays of Bˉ0(s) and Bˉ0 mesons into J/ψπ+π−π+π− final states, produced in pp collisions at the LHC,...
Decays of B(s)(0) and B(0) mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the L...
Decays of B(s)(0) and B(0) mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the L...
Decays of ¯B0s and ¯B0 mesons into J/ψ π+π−π+π− final states, produced in pp collisions at the LHC, ...
Decays of anti-B0s and anti-B0 mesons into J/ψ π+ π− π+ π− final states, produced in pp collisions a...
decays and measurement of the f1(1285) mixing angle The LHCb collaboration† Decays of B0s and B 0 me...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B\u304s0 and B\u3040 mesons into J/\u3c8 \u3c0+\u3c0-\u3c0+\u3c0- final states, produced i...
Decays of Bs and B0 mesons into J/\psi \pi +\pi -\pi +\pi - final states, produced in pp collisions ...
Decays of [¯ over B][0 over s] and [¯ over B][superscript 0] mesons into J/ψ π[superscript +]π[super...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B(s)(0) and B(0) mesons into J/psi pi+pi-pi+pi- final states, produced in pp collisions at...