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HK: Fachverband Physik der Hadronen und Kerne

HK 20: Fundamental Symmetries

HK 20.6: Vortrag

Mittwoch, 1. September 2021, 18:30–18:45, H4

Coalescence in MC generators and implications for cosmic ray studies — •Maximilian Horst, Laura Serksnyte, Luca Barioglio, and Laura Fabbietti — Technische Universität München

Coalescence is one of the main models used to describe the formation of light (anti)nuclei in high-energy collisions. It is based on the assumption that two nucleons close in phase space can coalesce and form a nucleus. Coalescence has been successfully tested in hadron collisions with various experiments, from small (pp collisions) to large collision systems (Au-Au and Pb-Pb collisions). However, in Monte Carlo simulations (anti)nuclear production is not described by event generators. A possible solution is given by the implementation of so-called coalescence afterburners, which can describe nuclear production on an event-by-event basis. This idea finds its application especially in astrophysical studies, allowing for precise description of (anti)nuclear fluxes in cosmic rays, which are crucial for indirect Dark Matter searches.

In this talk we present the implementation of event-by-event coalescence afterburners for MC generators. Different approaches to this implementation will be discussed, and the comparison with available experimental results from various collision systems will be shown.