Production asymmetries of b and c hadrons at LHCb

Using a data sample corresponding to an integrated luminosity of 1.0 fb(-1), collected by LHCb in pp collisions at a centre-of-mass energy of 7 TeV, the D(+), D(+), B(0) and B(s) (0) production asymmetries are determined. These quantities are measured by means of D(s) (+) →ϕ(K(+)K(-) )π(+), D (+) →Ks (0)(π(+)π(-))π(+), B (0)→J/ψ(μ(+)μ(-))K(*0)(K(+) π-), B (0)(→) D (-)(K (+)π(-)π(-))π(+) and B(s) (0)→D(s) (-)(K (+) K (-)π(-))π(+) decays. Moreover, using the full LHCb Run 1 integrated luminosity, corresponding to 1.0 fb(-1) at 7 TeV and 2.0 fb(-1) at 8 TeV, the production and decay asymmetry of the Λ(0) ( )b( ) baryon, A( )P(+)D( )(Λ(0) (b)), is determined by means of Λ(0) (b) →J/ φ(μ(+)μ(-))pK (–) decays. All asymmetries are measured as a function of p ( )T( ) and y (or η in the D (+), B (0) and B (s) (0) cases) of the involved hadrons, in order to check if there is a dependence on kinematics.