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Measurement of the CP-violating phase β in B0 → J/ψ π+ π− decays and límits on penguin effects
(Physics Letters B , 2015, Vol. 742, (Març), 2015-03-06)Time-dependent CPviolation is measured in the (—)B0→J/ψπ+π−channel for each π+π−resonant final state using data collected with an integrated luminosity of 3.0fb−1in ppcollisions using the LHCb detector. ...