Measurement of jet fragmentation in PbPb and pp collisions at s NN =2.76 TeV
(2014) Physical Review. C, Nuclear Physics — Vol. 90, n° 2 (2014) (2014)
Files
pdfdocument.pdf
Open Access - Adobe PDF
- 1.08 MB
Details
- Authors
- et. al.
- Abstract
- The jet fragmentation function of inclusive jets with transverse momentum pT above 100GeV/c in PbPb collisions has been measured using reconstructed charged particles with pT above 1GeV/c in a cone of radius 0.3 around the jet axis. A data sample of PbPb collisions collected in 2011 at a nucleon-nucleon center-of-mass energy of sNN=2.76TeV corresponding to an integrated luminosity of 150μb-1 is used. The results for PbPb collisions as a function of collision centrality and jet transverse momentum are compared to reference distributions based on pp data collected at the same center-of-mass energy in 2013, with an integrated luminosity of 5.3pb-1. A centrality-dependent modification of the fragmentation function is found. For the most central collisions, a significant enhancement is observed in the PbPb/pp fragmentation function ratio for charged particles with pT less than 3GeV/c. This enhancement is observed for all jet pT bins studied. © 2014 CERN, for the CMS Collaboration.
- Affiliations
Citations
Basegmez, S., Vizan Garcia, J. M., Vidal Marono, M., Selvaggi, M., Quertenmont, L., Popov, A., Piotrzkowski, K., Pin, A., Pagano, D., Nuttens, C., Militaru, O., Liao, J., Lemaitre, V., Komm, M., Jez, P., Hollar, J., Giammanco, A., Forthomme, L., Favart, D., et al. (2014). Measurement of jet fragmentation in PbPb and pp collisions at s NN =2.76 TeV. Physical Review. C, Nuclear Physics, 90(2 (2014)). https://doi.org/10.1103/PhysRevC.90.024908 (Original work published 2014)