17-24 July 2013
KTH and Stockholm University Campus
Europe/Stockholm timezone

Measurement of anti- and hyper-matter production with the ALICE experiment

18 Jul 2013, 16:30
16m
E2 (KTH Campus)

E2

KTH Campus

Talk presentation Ultrarelativistic Heavy Ions Ultrarelativistic Heavy Ions

Speaker

Alexander Philipp Kalweit (CERN)

Description

The unprecedented high collision energies at the Large Hadron Collider give rise to a significant production of light anti- and hyper-nuclei in proton-proton and, even more, in Pb-Pb collisions. With its excellent particle identification capabilities based on the specific energy loss (dE/dx) in the Time Projection Chamber and time-of-flight measurements, the ALICE experiment is very well suited for the detection of these rare stable particles. Results for (anti)deuterons, (anti)tritons, (anti-)3He and (anti- )4He will be presented. With the help of the Inner Tracking System, secondary (anti-)nuclei originating from the decays of light (anti-)hyper- nuclei can be clearly separated from primary particles. This allows not only for the topological identification of the hyper-triton via its mesonic decay (3_Λ_H -> 3He + pion), but also for the search for even lighter hyper- matter systems, i.e. Λ-Λ and Λ-neutron bound states. The results will also be compared with the expectations from thermal and coalescence models.

Primary author

Presentation Materials