# Measurement of $B^0$, $B^0_s$, $B^+$ and $\Lambda^0_b$ production asymmetries in 7 and 8 TeV proton-proton collisions

## TL;DR

This paper reports measurements of production asymmetries for various $b$ hadrons in proton-proton collisions at 7 and 8 TeV, providing insights into hadronization processes and CP violation effects.

## Contribution

The study presents the first comprehensive measurement of $B^0$, $B^0_s$, $B^+$, and $\Lambda^0_b$ production asymmetries at these energies as functions of transverse momentum and rapidity.

## Key findings

- Measured asymmetries as functions of kinematic variables.
- Determined overall production asymmetries integrated over phase space.
- Provided data to test QCD models of hadronization.

## Abstract

The $B^0$, $B^0_s$, $B^+$ and $\Lambda^0_b$ 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.