Darmstadt 2016 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 17: Heavy Ion Collision and QCD Phases IV

HK 17.6: Talk

Tuesday, March 15, 2016, 15:30–15:45, S1/01 A01

Studies of the two-baryon interaction with ALICE — •Maria Nicassio for the ALICE collaboration — Research Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt

The interaction among baryons has been the subject of intense theoretical studies for many years. Nonetheless it is still poorly known for systems that include heavy strange baryons.

Experimentally, few data from scattering experiments exist and they are not enough to constrain theory. The increasing energies of the LHC and the unprecedented sensitivity of its detectors give to this subject a new chance to be explored by studying two-baryon momentum correlations. At the high energies of the LHC indeed, baryon production is copious especially in the most central Pb–Pb collisions and correlation functions can be measured with good precision and differentially in event multiplicity also for multi-strange baryons.

Details on the measurements and the strategy to extract the parameters characteristic of the strong interaction (scattering lengths and effective radii) using Lednicky-Lyuboshitz analytical model will be discussed with particular focus on the ongoing studies of the pΞ systems, never measured before.