dc.contributor.author | ALICE Collaboration | |
dc.date.accessioned | 2020-07-21T08:25:56Z | |
dc.date.available | 2020-07-21T08:25:56Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | ALICE Collaboration. (2020). Evidence of Spin-Orbital Angular Momentum Interactions in Relativistic Heavy-Ion Collisions. <i>Physical Review Letters</i>, <i>125</i>(1), Article 012301. <a href="https://doi.org/10.1103/PhysRevLett.125.012301" target="_blank">https://doi.org/10.1103/PhysRevLett.125.012301</a> | |
dc.identifier.other | CONVID_41617261 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/71211 | |
dc.description.abstract | The first evidence of spin alignment of vector mesons (K*0 and ϕ) in heavy-ion collisions at the Large Hadron Collider (LHC) is reported. The spin density matrix element ρ00 is measured at midrapidity (|y|<0.5) in Pb-Pb collisions at a center-of-mass energy (√sNN) of 2.76 TeV with the ALICE detector. ρ00 values are found to be less than 1/3 (1/3 implies no spin alignment) at low transverse momentum (pT<2 GeV/c) for K*0 and ϕ at a level of 3σ and 2σ, respectively. No significant spin alignment is observed for the K0S meson (spin=0) in Pb-Pb collisions and for the vector mesons in pp collisions. The measured spin alignment is unexpectedly large but qualitatively consistent with the expectation from models which attribute it to a polarization of quarks in the presence of angular momentum in heavy-ion collisions and a subsequent hadronization by the process of recombination. | en |
dc.format.mimetype | application/pdf | |
dc.language | eng | |
dc.language.iso | eng | |
dc.publisher | American Physical Society | |
dc.relation.ispartofseries | Physical Review Letters | |
dc.rights | CC BY 4.0 | |
dc.title | Evidence of Spin-Orbital Angular Momentum Interactions in Relativistic Heavy-Ion Collisions | |
dc.type | article | |
dc.identifier.urn | URN:NBN:fi:jyu-202007215365 | |
dc.contributor.laitos | Fysiikan laitos | fi |
dc.contributor.laitos | Department of Physics | en |
dc.contributor.oppiaine | Ydin- ja kiihdytinfysiikan huippuyksikkö | fi |
dc.contributor.oppiaine | Fysiikka | fi |
dc.contributor.oppiaine | Centre of Excellence in Nuclear and Accelerator Based Physics | en |
dc.contributor.oppiaine | Physics | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | |
dc.description.reviewstatus | peerReviewed | |
dc.relation.issn | 0031-9007 | |
dc.relation.numberinseries | 1 | |
dc.relation.volume | 125 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © 2020 CERN, for the ALICE Collaboration | |
dc.rights.accesslevel | openAccess | fi |
dc.subject.yso | hiukkasfysiikka | |
dc.subject.yso | spin (kvanttimekaniikka) | |
dc.format.content | fulltext | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p15576 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p38874 | |
dc.rights.url | https://creativecommons.org/licenses/by/4.0/ | |
dc.relation.doi | 10.1103/PhysRevLett.125.012301 | |
dc.type.okm | A1 | |