Charged particle multiplicity in pp-collisions from the dilute Glasma
Andreas Ipp, Markus Leuthner, David I. M\"uller, S\"oren Schlichting,, Kayran Schmidt, Pragya Singh
TL;DR
This paper investigates proton-proton collision multiplicities using the dilute Glasma model, highlighting the importance of saturation momentum fluctuations and hot spot models to better match experimental data.
Contribution
It introduces event-by-event saturation momentum fluctuations and a hot spot model to improve the dilute Glasma's agreement with experimental multiplicity distributions.
Findings
Fluctuations of Qs improve high-multiplicity event modeling.
Hot spot models enhance the fit to experimental multiplicity histograms.
Dilute Glasma underestimates large multiplicity events without fluctuations.
Abstract
Proton-proton collisions are studied in the dilute Glasma framework. Compared to experimental multiplicity distributions, the dilute Glasma underestimates large multiplicity events. We show how event-by-event fluctuations of the saturation momentum Qs can help repair the multiplicity distribution. Furthermore, we discuss a hot spot model for protons and also find improvements in the multiplicity histograms.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research · Particle physics theoretical and experimental studies