18-23 March 2018
Florianopolis, Brazil
America/Sao_Paulo timezone

## Effects of colour reconnection on resonance production

19 Mar 2018, 16:00
1h
Florianopolis, Brazil

Poster

### Speaker

Short-lived hadronic resonance production in high energy collisions is an important observable to investigate the properties of the system created in such collisions. Measurements of particle production yields have shown a suppression in the relative production of resonances with respect to non-resonance particles for high energy collisions in which a large amount of particles were produced. In this work, we explore the effects of colour reconnection (CR) in the hadrochemistry of high multiplicity pp events simulated with the PYTHIA 8 event generator, with special emphasis on ratios such as $K^{*}/K$, $\rho/\pi$ and $\eta’/\pi$ as a function of charged particle multiplicity. The results obtained show that a suppression of hadronic resonance production relative to non-resonance in high multiplicity collisions, so far interpreted as being due to re-scattering of resonance decay daughters in a hadronic phase of the system evolution, might be caused by CR in the presence of multi-parton scatterings. Based on arXiv:1707.02075 (accepted for publication, PRD).