Abstract
The B0, Bs0, B+ and Λb0 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 8 TeV. 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.
Highlights
The production rates of b and b hadrons are not expected to be identical in proton–proton collisions, as b and b quarks, produced in a hard scattering at the partonic level, might have different probabilities for coalescing with u or d valence quarks from the beam remnant
The LHCb detector, thanks to its unique geometry as a forward spectrometer, is suited to measure such asymmetries, as they are expected to be enhanced at forward rapidities and small transverse momenta
The measurements of hadron production asymmetries are of primary importance, for the understanding of the production mechanisms, and for enabling precise measurements of CP violation in c and b hadrons at the LHC
Summary
Article history: Received April 2017 Received in revised form 5 September 2017 Accepted September 2017 Editor: L. Λb0 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 8 TeV. 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 determined
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