We report measurements of charm-mixing parameters based on the decay-time-dependent ratio of D0 → K+π− to D0 → K−π+ rates. The analysis uses a data sample of proton-proton collisions corresponding to an integrated...
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Measurements of CP observables in B± → DK∗± decays are presented, where D denotes a superposition of D0 and D0 meson states. Decays of the D meson to K−π+, K−K+, π−π+, K−π+π−π+ and π−π+π−π+ are us...
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A search for the lepton-flavour violating decays Bs0 → e±µ and B0 → e±µ is performed based on a sample of proton-proton collision data corresponding to an integrated luminosity of 3 fb−1, collect...
A test of lepton universality, performed by measuring the ratio of the branching fractions of the B0 → K∗0µ+µ− and B0 → K∗0e+e− decays, RK∗0, is presented. The K∗0 meson is reconstructed in the final state...
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We report the measurements of the CP-violating parameters in Bs0 → DsK± decays observed in pp collisions, using a data set corresponding to an integrated luminosity of 3.0 fb−1 recorded with the LHCb detector. W...
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The decays χc1 → J/ψµ+µ− and χc2 → J/ψµ+µ− are observed and used to study the resonance parameters of the χc1 and χc2 mesons. The masses of these states are measured to be m(χc1) = 3510.71...
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The first observation of the decay of a B0 meson to a purely baryonic final state, B0 → pp, is reported. The proton-proton collision data sample used was collected with the LHCb experiment at center-of-mass energies ...
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Searches are performed for both prompt-like and long-lived dark photons, A', produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using A'→µ+µ− decays and a data sample corresp...
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The production of B± mesons is studied in pp collisions at centre-of-mass energies of 7 and 13 TeV, using B± → J/ψK± decays and data samples corresponding to 1.0 fb−1 and 0.3 fb−1, respectively. The p...
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A measurement is reported of the ratio of branching fractions R(J/ψ) = B(Bc+ → J/ψτ+ντ)/B(Bc+ → J/ψµ+νµ), where the τ+ lepton is identified in the decay mode τ+ → µ+νµντ. This analys...
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