# Measurement of B-meson production cross section in proton–proton collisions at √s = 13.6 TeV with ALICE

- Institution: CERN
- Speaker: Fabrizio Chinu
- Year: 2026
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3023732)
- Licence: [CERN](https://copyright.web.cern)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Due to their large mass, beauty quarks are produced in hard-scattering processes with large transferred momentum, allowing their production to be computed via perturbative quantum chromodynamics (pQCD) calculations. Measurements of beauty-hadron production cross sections in proton--proton (pp) collisions provide a sensitive test of these calculations. Theoretical calculations based on factorisation approach compute the transverse-momentum ($p_{\rm{T}}$)- and rapidity-differential hadron production cross sections as the convolution of three components: the parton distribution functions (PDFs) of the colliding protons; the partonic scattering cross section, expressed as a perturbative series expansion in the strong coupling constant; and the fragmentation function (FF), which describes the non-perturbative transition of the beauty quark into a given hadron. The FF is typically parameterised using measurements from $e^{+}e^{-}$ or ep collisions, under the assumption that the hadronisation process is universal, i.e., independent of the collision system. Measurements down to low $p_{\rm{T}}$ are fundamental for the estimation of the total $b\bar{b}$ production cross section. Insights into the beauty-quark hadronisation mechanisms are given by measurements of the relative abundances of different beauty-hadron species. Finally, measurements of beauty-hadron production cross sections in pp collisions provide a reference for Pb--Pb collisions, where effects due to the formation of a quark-gluon plasma are expected.

In this contribution, the recent measurement of the $\rm{B}^{0}$ production cross section in pp collisions at $\sqrt{s} = 13.6$ TeV performed by the ALICE Collaboration using data collected during LHC Run 3 is presented. The $\rm{B}^{0}$ mesons are fully reconstructed down to very low $p_{\rm{T}}$ in the decay channel $\rm{B}^0 \rightarrow \rm{D}^{-}\pi^{+}$. The measured production cross section is compared with state-of-the-art pQCD calculations, including…

## Lectures

1. [Measurement of B-meson production cross section in proton–proton collisions at √s = 13.6 TeV with ALICE](https://invisiblenetwork.ai/learn/cern/3023732/1acedf2b1f06), 47 min (CERN's player)