dc.contributor.author | ALICE, Collaboration | |
dc.contributor.author | Langøy, Rune | |
dc.contributor.author | Lien, Jørgen | |
dc.date.accessioned | 2015-07-30T11:46:46Z | |
dc.date.accessioned | 2016-01-15T14:17:02Z | |
dc.date.available | 2015-07-30T11:46:46Z | |
dc.date.available | 2016-01-15T14:17:02Z | |
dc.date.issued | 2014 | |
dc.identifier.issn | 0370-2693 | |
dc.identifier.uri | http://hdl.handle.net/11250/2374026 | |
dc.description.abstract | In high-energy collisions, the spatio-temporal size of the particle production region can be measured using the Bose–Einstein correlations of identical bosons at low relative momentum. The source radii are typically extracted using two-pion correlations, and characterize the system at the last stage of interaction, called kinetic freeze-out. In low-multiplicity collisions, unlike in high-multiplicity collisions, two-pion correlations are substantially altered by background correlations, e.g. mini-jets. Such correlations can be suppressed using three-pion cumulant correlations. We present the first measurements of the size of the system at freeze-out extracted from three-pion cumulant correlations in pp, p–Pb and Pb–Pb collisions at the LHC with ALICE. At similar multiplicity, the invariant radii extracted in p–Pb collisions are found to be 5–15% larger than those in pp, while those in Pb–Pb are 35–55% larger than those in p–Pb. Our measurements disfavor models which incorporate substantially stronger collective expansion in p–Pb as compared to pp collisions at similar multiplicity. | |
dc.language.iso | eng | nb_NO |
dc.title | Freeze-out radii extracted from three-pion cumulants in pp, p-Pb and Pb-Pb collisions at the LHC | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | |
dc.date.updated | 2015-07-30T11:46:46Z | |
dc.subject.nsi | VDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 | nb_NO |
dc.subject.nsi | VDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 | nb_NO |
dc.identifier.doi | 10.1016/j.physletb.2014.10.034 | |
dc.identifier.cristin | 1204239 | |