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Measurement of jet fragmentation in PbPb and pp collisions at √sNN=2.76 TeV (CROSBI ID 213586)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

(CMS Collaboration) Chatrchyan, S. ; ... ; Pleština, Roko ; ... ; Godinović, Nikola ; Lelas, Damir ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko et al. Measurement of jet fragmentation in PbPb and pp collisions at √sNN=2.76 TeV // Physical review. C, Nuclear physics, 90 (2014), 024908, 20. doi: 10.1103/PhysRevC.90.024908

Podaci o odgovornosti

Chatrchyan, S. ; ... ; Pleština, Roko ; ... ; Godinović, Nikola ; Lelas, Damir ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Kadija, Krešo ; Luetić, Jelena ; Mekterović, Darko ; Morović, Srećko ; Sudic, Lucija ; ... ; Đurić, Senka ; ... ; Woods, N.

CMS Collaboration

engleski

Measurement of jet fragmentation in PbPb and pp collisions at √sNN=2.76 TeV

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.

CMS ; PbPb ; pp ; 2.76 TeV ; Jet fragmentation

CERN, for the CMS Collaboration.

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Podaci o izdanju

90

2014.

024908

20

objavljeno

0556-2813

1089-490X

10.1103/PhysRevC.90.024908

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