Decays of B̄s0 and B̄0 mesons into J/ψ π+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. B̄(s)0→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 nonstrange components of its wave function in the qq̄ structure model is determined to be ±(24.0-2.6-0.8+3.1+0.6). Implications on the possible tetraquark nature of the f1(1285) are discussed
Decays of (B)over bar(s)(0)and (B)over bar (0) mesons into J/psi pi(+)pi(-)pi(+)pi(-) final states, ...
Decays of (B)over bar(s)(0)and (B)over bar (0) mesons into J/psi pi(+)pi(-)pi(+)pi(-) final states, ...
Decays of (B)over bar(s)(0)and (B)over bar (0) mesons into J/psi pi(+)pi(-)pi(+)pi(-) final states, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
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¯ 0 s and B¯ 0 mesons into J=ψ πþπ−πþπ− final states, produced in pp collisions at the L...
Decays of B¯ 0 s and B¯ 0 mesons into J=ψ πþπ−πþπ− final states, produced in pp collisions at the L...
Decays of B\u304s0 and B\u3040 mesons into J/\u3c8 \u3c0+\u3c0-\u3c0+\u3c0- final states, produced i...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
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)over bar(s)(0)and (B)over bar (0) mesons into J/psi pi(+)pi(-)pi(+)pi(-) final states, ...
Decays of (B)over bar(s)(0)and (B)over bar (0) mesons into J/psi pi(+)pi(-)pi(+)pi(-) final states, ...
Decays of (B)over bar(s)(0)and (B)over bar (0) mesons into J/psi pi(+)pi(-)pi(+)pi(-) final states, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
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¯ 0 s and B¯ 0 mesons into J=ψ πþπ−πþπ− final states, produced in pp collisions at the L...
Decays of B¯ 0 s and B¯ 0 mesons into J=ψ πþπ−πþπ− final states, produced in pp collisions at the L...
Decays of B\u304s0 and B\u3040 mesons into J/\u3c8 \u3c0+\u3c0-\u3c0+\u3c0- final states, produced i...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
Decays of B̄s0 and B̄0 mesons into J/ψ π+π-π+π- final states, produced in pp collisions at the LHC, ...
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)over bar(s)(0)and (B)over bar (0) mesons into J/psi pi(+)pi(-)pi(+)pi(-) final states, ...
Decays of (B)over bar(s)(0)and (B)over bar (0) mesons into J/psi pi(+)pi(-)pi(+)pi(-) final states, ...
Decays of (B)over bar(s)(0)and (B)over bar (0) mesons into J/psi pi(+)pi(-)pi(+)pi(-) final states, ...