Phys.Rev. D92 (2015) 094010

by: Bierlich, Christian (Lund U.) et al.

We present a series of observables for soft inclusive physics, and utilize them for comparison between two recently developed color reconnection models: the new color reconnection model in pythia and the DIPSY rope hadronization model. The observables are ratios of identified hadron yields as a function of the final-state activity, as measured by the charged multiplicity. Since both considered 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. Flowlike patterns, previously found to be connected to color reconnection models, are investigated for the new models. Only pythia shows a p⊥-dependent enhancement of the Λ/K ratio as the final-state activity increases, with the enhancement being largest in the mid-p⊥ region.
Publ date: 
Thursday, July 9, 2015 - 04:51