TL;DR
This paper reports on precise measurements of pion and kaon multiplicities at COMPASS, providing essential experimental data to extract fragmentation functions crucial for understanding proton spin structure.
Contribution
It presents new full-differential results on hadron multiplicities from COMPASS, covering a wide kinematic range for improved fragmentation function determination.
Findings
High-precision pion and kaon multiplicity data
Extended kinematic coverage for fragmentation functions
Enhanced understanding of proton spin structure
Abstract
Fragmentation functions represent a key ingredient to address the proton spin structure in semi-inclusive deep-inelastic scattering and proton-proton collisions. They can not be determined from perturbative Quantum Chromodynamics and have to be extracted from experimental data in different processes. The COMPASS experiment at CERN provides a large data sample and covers a wide kinematic range for precise measurement of hadron multiplicities, directly connected to fragmentation functions. Recent, full-differential results on pion and kaon multiplicities are presented and discussed
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