Speaker
Jonas Anielski
(Westfaelische Wilhelms-Universitaet Muenster (DE))
Description
Transverse momentum distributions of identified particles have been measured in several multiplicity classes in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV. This can improve the understanding of possible collective effects in high multiplicity events. Furthermore the production mechanism of deuterons can be studied, since p-Pb collisions bridge the charged multiplicity gap between pp and low multiplicity Pb-Pb collisions.
Particles are reconstructed with the central barrel detectors over a wide transverse momentum range (0 GeV/$c$ up to 15 GeV/$c$), exploiting different identification techniques. Primary charged particles ($\pi\mathrm{^{\pm}, K^{\pm}, p, \bar{p}, d\ and\ \bar{d}}$) are identified by their specific energy loss ($\mathrm{d}E/\mathrm{d}x$) and time-of-flight. Weakly decaying particles ($\mathrm{K^{0}_{s}, \Lambda\ and\ \bar{\Lambda}}$) are identified by their characteristic decay topology.
Particle-production yields, spectral shapes and particle ratios have been measured in several multiplicity classes. Comparisons with models and results obtained in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV and pp collisions at $\sqrt{s_{\mathrm{NN}}}$ = 7 TeV at the LHC will be shown.
Author
Jonas Anielski
(Westfaelische Wilhelms-Universitaet Muenster (DE))
