Looking for strange particles in ALICE The exercise proposed here consists of a search for strange particles, produced from collisions at the LHC and recorded by the ALICE experiment. It is based on the recognition of their V0-decays, such as Kos → π+π-, Λ→ p + π- and cascades, such as Ξ- → Λ + π- ( Λ → p + π-). The identification of the strange particles is based on the topology of their decay combined with the identification of the decay products; the information from the tracks is used to calculate the invariant mass of the decaying particle, as an additional confirmation of the particle species. You will have to identify the decay products and based on their momenta calculate the invariant mass to identify the decaying particle.
Please note that the file you are going to download (alice-mc.tgz) is 31139203 bytes big. On an average ADSL connection, it may take long to download it (about 3 minutes at 1Mbps).
Moreover, if you use one of the provided Virtual Machines to perform your analyses, then you don't need to download datasets manually, because the VM will fetch all the necessary file chunks via the XRootD protocol.
Manual download of files via HTTP is only necessary if you would prefer not to use the XRootD protocol for one reason or another.
The open data are released under the Creative Commons CC0 waiver. Neither ALICE nor CERN endorse any works, scientific or otherwise, produced using these data. All releases will have a unique DOI that you are requested to cite in any applications or publications.