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arXiv · 2201.06316

Hyperfine splitting effects in string hadronization

Christian Bierlich·Smita Chakraborty·Gösta Gustafson·Leif Lönnblad
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Abstract

We revisit the recipe for hadron formation in the Lund string hadronization model. Given an incoming quark or quark-diquark pair, weights for hadron formation are updated to take hyperfine splitting effects arising from the mass difference between u, d-type and s-type quarks. We find that the procedure improves the description of hadron yields in $\mathrm{e}^+\mathrm{e}^-$ collisions and the $\phi$ cross section in neutral current DIS. We also show results for proton collisions, and discuss the future use of this study in the context of small system collectivity.

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Christian Bierlich, Smita Chakraborty, Gösta Gustafson, Leif Lönnblad. 2022-01-17. Hyperfine splitting effects in string hadronization. https://doi.org/10.1140/epjc%2Fs10052-022-10172-9

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