Measurement of f$_{1}$(1285) production in pp collisions at $\mathbf{\sqrt{{\textit s}}}$ = 13 TeV

The ALICE collaboration Acharya, Shreyasi ; Agarwal, Apar ; Aglieri Rinella, Gianluca ; et al.
CERN-EP-2024-239, 2024.
Inspire Record 2829849 DOI 10.17182/hepdata.158601

This study presents the first measurement of the f$_{1}$(1285) resonance using the ALICE detector in inelastic proton--proton collisions at a center-of-mass energy of 13 TeV. The resonance is reconstructed at midrapidity ($|y| <$ 0.5) through the hadronic decay channel f$_{1} (1285) \rightarrow \mathrm{K^{0}_{S} K^{\pm}\pi^{\mp}}$. Key measurements include the determination of its mass, transverse-momentum integrated yield, and average transverse momentum. Additionally, the ratio of the transverse-momentum integrated yield of f$_{1}$(1285) to pion is compared with calculations from the canonical statistical hadronization model. The model calculation, assuming a zero total strangeness content for f$_{1}$(1285), reproduces the data within 1$\sigma$ deviation, shedding light on the quark composition of f$_{1}$(1285).

2 data tables

Mass of f$_{1}$ meson measured in pp collisions at $\sqrt{s}$ = 13 TeV.

$p_{\rm T}$-distributions of f$_{1}$ meson measured in pp collisions at $\sqrt{s}$ = 13 TeV.