Effects of Colour Reconnection on Hadron Flavour Observables

Understand

We present a comparison between two recently developed colour reconnection models, the new colour reconnection model in PYTHIA and the DIPSY rope hadronization model.

• Specifically we investigate ratios of identified hadron yields as a function of the final-state activity, as measured by the charged multiplicity.
• Since both models have a nontrivial dependence on the final-state activity, the above observables serve as excellent probes to test the effect of these models.
• Both models show a clear baryon enhancement with increasing multiplicity, while only the DIPSY rope model leads to a strangeness enhancement.