Steinberg, P. (2012) Heavy-ion physics with the ATLAS detector at the LHC. Il nuovo cimento C, 35 (1). pp. 187-195. ISSN 1826-9885
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Abstract
First results on jet, Jψ and Z production are presented from the first lead-lead run at the LHC, using the ATLAS detector. The transverse energies of opposed dijets are observed to show greater asymmetry with increasing event centrality, something not observed in proton-proton collisions. This may point to an interpretation in terms of strong jet energy loss in a hot, dense medium. Also, using the ATLAS muon spectrometer, a centrality-dependent suppression has been observed in the yield of J/ψ mesons. It is found to be qualitatively similar to the trends observed at previous, lower-energy experiments. The relative yields of Z bosons as a function of centrality are also presented, although the low statistics precludes any strong conclusions. These results provide a first look at the modification of high-pT processes in heavy-ion collisions at the highest-available beam energy.
| Item Type: | Article |
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| Uncontrolled Keywords: | Relativistic heavy-ion collisions |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 14 Apr 2020 16:54 |
| Last Modified: | 14 Apr 2020 16:54 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17674 |
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