Measurement of $\textit{ω}$ meson production in pp collisions at = 13 TeV

The $\textit{p}$ -differential cross section of $\textit{ω}$ meson production in pp collisions at = 13 TeV at midrapidity ($\textit{|y| <}$ 0$\textit{.}$5) was measured with the ALICE detector at the LHC, covering an unprecedented transverse-momentum range of 1$\textit{.}$6 $\textit{< p}$ $\textit{<}$ 50 GeV/$\textit{c}$. The meson is reconstructed via the $\textit{ω}$ → $\textit{π}$ $\textit{π}$ $\textit{π}$ decay channel. The results are compared with various theoretical calculations: PYTHIA8.2 with the Monash 2013 tune overestimates the data by up to 50%, whereas good agreement is observed with Next-to-Leading Order (NLO) calculations incorporating $\textit{ω}$ fragmentation using a broken SU(3) model. The $\textit{ω/π}$ ratio is presented and compared with theoretical calculations and the available measurements at lower collision energies. The presented data triples the $\textit{p}$ ranges of previously available measurements. A constant ratio of $\textit{C}$ = 0$\textit{.}$578 ± 0$\textit{.}$006 (stat.) ± 0$\textit{.}$013 (syst.) is found above a transverse momentum of 4 GeV/$\textit{c}$, which is in agreement with previous findings at lower collision energies within the systematic and statistical uncertainties.