Speaker
Description
Understanding hyperon-nucleon interactions is crucial for describing strange nuclear matter and for resolving the hyperon puzzle in neutron stars. Three-body forces are expected to play a key role in this context [1]. In this work, we report the measurement of the p-p-$\Lambda$ three-particle correlation functions in Au+Au collisions at $\sqrt{s_{NN}}$=3 GeV. At this beam energy, the system features a high baryon density and lies close to the hyperon production threshold. This unique condition enables a controlled study of hyperon–nucleon and hyperon–nucleon–nucleon interactions in dense baryonic matter. Utilizing the high-statistics datasets collected by the STAR experiment in 2021, a precise measurement of the p–p–$\Lambda$ correlation at low relative momentum is expected to provide valuable constraints on the three-body interactions involving hyperons [2].
[1] D. Lonardoni, et al, Phys. Rev. Lett. 114, 092301 (2015)
[2] E. Garrido, et al, Phys. Rev. C 110, 054004 (2024)
