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arXiv · 1911.00559

Effect of color reconnection and rope formation on resonance production in p$-$p collisions in Pythia 8

Ankita Goswami·Ranjit Nayak·Basanta Kumar Nandi·Sadhana Dash
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Abstract

The resonance production in proton$-$proton collisions at $\sqrt{s}$ = 7 TeV and 13 TeV have been investigated using Pythia 8 event generator within the framework of microscopic processes like color reconnection and rope hadronization. Specifically, the observable effects of different modes of color reconnections on the ratio of yields of mesonic and baryonic resonances with respect to their stable counterpart have been explored as a function of event activity. A suppression in the ratio is observed as a function of number of multi-partonic interactions for mesonic resonances. The $\mathrm{\phi/K}$ and $\mathrm{\phi/\pi}$ ratios show an enhancement for high multiplicity events due to enhanced production of strange quarks via the microscopic process of rope hadronization in the partonic phase. The mechanism of the hadronization of color ropes together with the QCD-based color reconnection of partons predicted an enhancement in the ratio for baryonic resonances to non-resonance baryons having similar quark content. The yield ratios of resonances are found to be independent of the collision energy and strongly dependent on event activity.

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Ankita Goswami, Ranjit Nayak, Basanta Kumar Nandi, Sadhana Dash. 2019-11-01. Effect of color reconnection and rope formation on resonance production in p$-$p collisions in Pythia 8. https://arxiv.org/abs/1911.00559

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