Measurement of prompt $K^{0}_{S}$ and $\Lambda$ production cross-sections and ratios in proton-proton collisions at $\sqrt{s}=13$ TeV
Preliminary paper plots and comparisons
Analysis contacts: Alexandru Catalin ENE, Florin MACIUC, Alexandru Tudor GRECU
This page presents a series of plots aimed at showing the importance of the $V^0$ particle production in LHCb fiducial phase-space for pp collisions at a centre-of-mass energy of 13 TeV.
This measurement extends the previous LHCb measurements at 0.9 and 7 TeV centre-of-mass energies as one can see from the measurement domain vs. rapidity loss plots below. A comparison with measurements from other experiments at comparable collision energies is given.
Production cross-section measurements for the $V^0$ hadrons would provide a valuable empiric input to non-perturbative production models used both in high energy physics, but also in astrophysics. Here we give predictions of various models for the double/single differential production cross-sections in the measurement phase-space (defined by the observables transverse momentum $p_T$, split in bins on logarithmic scale for reasons of data uniformity, and rapidity $y$) as well as integrated to full phase-space.
Baryon to meson and baryon to anti-baryon ratios are very good empirical input constraining the strange-sector hadronization implemented by various models. In this case the (systematic) uncertainties on the measured ratios can be further reduced by careful choice of the similar decay topologies used in the reconstructions of the $V^0$ candidates.
Quick validation of the current measurement is done with respect to measurements from other experiments only after carefully matching the data to common measured quantities which thus become truly compatible and experiment independent. Also using data from multiple experiments, new meta-studies oportunities arise such as the dependence of the production model parameters on the primary collision energy.
