Mainz 2022 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 35: Heavy-Ion Collisions and QCD Phases VII
HK 35.4: Vortrag
Mittwoch, 30. März 2022, 15:00–15:15, HK-H1
Extending strong-interaction studies in ALICE to nuclei: measurement of proton-deuteron and Lambda-deuteron correlations — •Bhawani Singh1 and Michael Jung2 for the ALICE collaboration — 1Technische Universität München — 2Goethe-Universität Frankfurt am Main
In the endeavour to explore the strong interaction among hadrons, ALICE has for the first time extended its femtoscopic studies to nuclei. The large data sample of high-multiplicity pp collisions at √s = 13 TeV allows us to measure both the proton–deuteron (p–d) and the Lambda–deuteron (Λ–d) momentum correlations.
In this contribution, the measured correlation functions for p–d and Λ–d are presented and compared to theoretical predictions. A large discrepancy between data and theory is observed in the case of p–d correlations, where the data show a depletion at low relative momenta, while the models predict a strong attractive signal. Possible explanations include a late formation of the deuterons and the formation of a bound state. The Λ–d correlation is in agreement with no observed interaction, supporting the findings in p–d, but the current data would also allow for a remaining strong-interaction signal. Future measurements by ALICE in the upcoming LHC Run 3 will help to shed more light on the sector of nuclei in femtoscopy.