SMuK 2023 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 58: Hadron Structure and Spectroscopy VII
HK 58.2: Vortrag
Donnerstag, 23. März 2023, 14:30–14:45, SCH/A419
Understanding the particle emitting source of π–π correlations from measurements in MB pp of ALICE at 13 TeV — •Maximilian Korwieser for the ALICE Germany collaboration — TU München, Physik Department E62, Excellence Cluster ’Universe’, Garching
The ALICE collaboration recently published a plethora of results obtained from femtoscopic measurements, studying the interaction between many exotic combinations of particles, most notably Ω–p. In general these studies depend on a precise understanding of the particle emitting source, which is constructed employing the resonance source model (RSM). In the RSM, deviations of a Gaussians source distribution, due to the effects of short lived resonances, are modeled via a Monte Carlo procedure. For two particle correlations between baryons (p–p and Λ–p) the RSM was already validated with great success. The goal of this work is to validate whether the RSM can also be applied to constrain the source in the mesonic sector. A differential study of the source functions spatial extension is presented, in bins of mT and multiplicity classes, by analysing MB pp collisions at √s = 13 TeV obtained by ALICE. An mT scaling behaviour of the source is observed and found to be compatible with previous results in the baryonic sector. This measurement supports the scenario of a common source for mesons and baryons in small colliding systems, allowing to employ the RSM to constrain the source for meson–baryon and meson–meson.
This research was supported by the BmBf.