Study of Resonance Production using Run 3 pp Collisions with ALICE

TL;DR

This paper presents new measurements of hadronic resonance production in high-energy proton-proton collisions at the LHC, providing insights into hadronic interactions and medium effects in small collision systems.

Contribution

It reports novel high-statistics measurements of specific resonances in Run 3 pp collisions at two different energies, enhancing understanding of resonance behavior in small systems.

Findings

Resonance yields are modified due to interactions in the hadronic medium.

Comparison of resonance production at different energies reveals energy dependence.

Results contribute to understanding of hadronic phase in small collision systems.

Abstract

Recent measurements in small collision systems at the LHC show striking similarities between high multiplicity pp, p-Pb collisions and Pb-Pb collisions. In particular, study of hadronic resonances provide valuable information about the final state hadronic interactions. Due to their short lifetime, resonances decay inside the hadronic medium after the chemical freezeout and their decay daughters interact elastically with other hadrons. As a consequence, measured resonance yields get modified. The ALICE experiment is suitable for measuring hadronic resonances thanks to its excellent tracking and particle identification capabilities over a broad momentum range. In this contribution, new measurements of $\mathrm{K}(892)^{*0}$, $\phi(1020)$, and $\Lambda(1520)$ resonance production using high statistics pp collisions at $\sqrt{s} =$ 0.9 and 13.6 TeV collected by the ALICE Collaboration during the Run 3 data taking are presented.