Multi-strange baryon production in pp, p_Pb and Pb_Pb collisions measured with ALICE

Hot Quarks 2014: Workshop for young scientists on the physics of ultrarelativistic nucleus-nucleus collisions

Colella, Domenico^1

Dipartimento Interateneo di Fisica M. Merlin, Sezione INFN, Via Orabona 4, Bari

70126, Italy^1

关键词: Light particles;    Measurements of;    Nuclear modification factors;    Omega particles;    Particle identifications;    Pb-Pb collisions;    Strangeness production;    Transverse momenta;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/612/1/012062/pdf
DOI  :  10.1088/1742-6596/612/1/012062

来源: IOP

【 摘 要 】

Transverse momentum spectra and yields of charged Ξ and Ω at mid-rapidity in pp, p-Pb and Pb-Pb collisions at the LHC have been measured by the ALICE Collaboration. These baryons are identified by reconstruction of their weak decay topology, in modes with only charged decay products, using the excellent tracking and particle identification capabilities of the detector. The recent measurements of the multi-strange baryon production relative to non-strange particles in p-Pb collisions are presented: this would help to understand the change in relative strangeness production from pp collisions to Pb-Pb collisions. Results on the nuclear modification factors for the charged Ξ and Ω particles, compared with those for other light particles, are also reported.