Erlangen 2026 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 30: Hadron Structure and Spectroscopy VI
HK 30.4: Vortrag
Donnerstag, 19. März 2026, 15:00–15:15, PHIL A 401
First measurement of the K*–KS0 correlation function in pp collisions at ALICE in Run 3 — •Nils Konert for the ALICE Germany collaboration — James-Franck-Straße 1, 85748 Garching b. München
The recent discovery of the Tcc+ by LHCb, together with the growing number of unconventional hadronic states, has highlighted clear tensions with the traditional valence-quark picture. Several resonances do not fit naturally into the expected qq spectrum. Among them, the f1(1420) and f1(1510) have been discussed as potential tetraquark candidates, although their internal structure remains unsettled.
Femtoscopy provides a powerful tool to probe such questions. By measuring correlations between two decay products, femtoscopic techniques are sensitive to the underlying hadron-hadron interaction, and therefore to possible structural differences of the parent resonance. Both f1(1420) and f1(1510) decay into K* and KS0, making this pair a promising system for investigating exotic configurations.
This contribution presents the first measurement of the K*–KS0 correlation function using data collected by the ALICE experiment in pp collisions at √s=13.6 TeV during LHC Run 3. The unprecedented statistics of Run 3 enable a significantly improved sensitivity to the interaction dynamics of this system, offering new insight into the possible exotic nature of the associated axial-vector states.
This project has been funded by the DFG under Germany‘s Excellence Strategy - EXC2094 - 390783311 and by BMFTR Verbundforschung (05P24WO4 ALICE).
Keywords: femtoscopy; ALICE; LHC Run3