Measurement of B~0, B_s~0 , B~+ and Λ_b~0 production asymmetries in 7 and 8TeV pp collisions at LHCb

摘要

The B~0, B_s~0 , B~+ and Λ_b~0 hadron production asymmetries are measured using a data sample corresponding to an integrated luminosity of 3.0 fb~(?1), collected by the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8TeV. The measurements are performed as a function of transverse momentum and rapidity of the b hadrons within the LHCb detector acceptance. The overall production asymmetries, integrated over transverse momentum and rapidity, are also determined.