Filtern
Erscheinungsjahr
- 2016 (101) (entfernen)
Dokumenttyp
- Preprint (70)
- Wissenschaftlicher Artikel (31)
Sprache
- Englisch (101)
Volltext vorhanden
- ja (101)
Gehört zur Bibliographie
- nein (101)
Schlagworte
- Centrality Class (1)
- Centrality Selection (1)
- Invariant Mass Distribution (1)
- Minimum Bias (1)
- Monte Carlo (1)
- Production Cross Section (1)
- Rapidity Range (1)
- Resolution Parameter (1)
- Systematic Uncertainty (1)
- Time Projection Chamber (1)
Institut
- Frankfurt Institute for Advanced Studies (FIAS) (101)
- Informatik (101)
- Physik (101)
- Hochschulrechenzentrum (1)
Transverse momentum (pT) spectra of pions, kaons, and protons up to pT=20 GeV/c have been measured in Pb-Pb collisions at sNN−−−√=2.76 TeV using the ALICE detector for six different centrality classes covering 0-80%. The proton-to-pion and the kaon-to-pion ratios both show a distinct peak at pT≈3 GeV/c in central Pb-Pb collisions that decreases towards more peripheral collisions. For pT>10 GeV/c, the nuclear modification factor is found to be the same for all three particle species in each centrality interval within systematic uncertainties of 10-20%. This suggests there is no direct interplay between the energy loss in the medium and the particle species composition in the hard core of the quenched jet. For pT<10 GeV/c, the data provide important constraints for models aimed at describing the transition from soft to hard physics.