Measurement of Z0-boson production at large rapidities in Pb–Pb collisions at √sNN = 5.02 TeV.
Journal article
| Authors | ALICE Collaboration and Barnby, Lee |
|---|---|
| Abstract | The production of Z0 bosons at large rapidities in Pb–Pb collisions at √sNN = 5.02 TeV is reported. Z0 candidates are reconstructed in the dimuon decay channel (Z0 → μ+ μ−), based on muons selected with pseudo-rapidity −4.0 < η < −2.5 and pT > 20 GeV/c. The invariant yield and the nuclear modification factor, RAA, are presented as a function of rapidity and collision centrality. The value of RAA for the 0–20% central Pb–Pb collisions is 0.67 ± 0.11 (stat.) ± 0.03 (syst.) ± 0.06 (corr. syst.), exhibiting a deviation of 2.6σ from unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3σ in the 0–90% centrality class and by 3σ in the 0–20% central collisions. |
The production of Z0 bosons at large rapidities in Pb–Pb collisions at √sNN = 5.02 TeV is reported. | |
| Keywords | Nuclear reactions; Particle physics; Proton-lead collisions; Protons |
| Year | 2018 |
| Journal | Physics Letters B |
| Publisher | Elsevier |
| ISSN | 03702693 |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.physletb.2018.03.010 |
| Web address (URL) | http://hdl.handle.net/10545/622478 |
| hdl:10545/622478 | |
| Publication dates | 06 Mar 2018 |
| Publication process dates | |
| Deposited | 29 Mar 2018, 13:54 |
| Contributors | STFC Daresbury Laboratory |
| File | File Access Level Open |
https://repository.derby.ac.uk/item/94qv5/measurement-of-z0-boson-production-at-large-rapidities-in-pb-pb-collisions-at-snn-5-02-tev
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