Speaker
Andreas Mathis
(Technische Universität München, Physik Department E62)
Description
Pioneering studies by the ALICE Collaboration have demonstrated the potential of employing femtoscopy to investigate and constrain baryon-baryon interactions with unprecedented precision. In particular, the small size of the particle-emitting source in pp and p-Pb collision systems at ultrarelativistic energies is well suited to study short-ranged strong potentials. Newly developed analysis tools allow for the comparison of the measured correlation function between the particle pairs of interest to theoretical predictions using either potentials or wave functions as an input.
In this contribution, we present measurements of Λ–Λ correlations by the ALICE Collaboration in pp collisions at √s = 7 and 13 TeV and p–Pb at √s$_{\mathrm{NN}}$ = 5.02 TeV. The interaction among the Λ–Λ pairs is studied with unprecedented precision, and the data are found to agree with hypernuclei results and state of the art lattice computations. Furthermore, by testing the compatibility of different model predictions and scattering parameters with the high precision data, the interaction is investigated. The experimental data tightly constrain the existence and the binding energy of a hypothetical H-dibaryon state.
Primary author
Andreas Mathis
(Technische Universität München, Physik Department E62)
