dc.contributor.author | ALICE Collaboration | |
dc.date.accessioned | 2021-12-22T05:49:35Z | |
dc.date.available | 2021-12-22T05:49:35Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | ALICE Collaboration. (2021). Experimental Evidence for an Attractive p−ϕ Interaction. <i>Physical Review Letters</i>, <i>127</i>(17), Article 172301. <a href="https://doi.org/10.1103/PhysRevLett.127.172301" target="_blank">https://doi.org/10.1103/PhysRevLett.127.172301</a> | |
dc.identifier.other | CONVID_102919114 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/79114 | |
dc.description.abstract | This Letter presents the first experimental evidence of the attractive strong interaction between a proton and a ϕ meson. The result is obtained from two-particle correlations of combined p−ϕ⊕¯p−ϕ pairs measured in high-multiplicity pp collisions at √s=13 TeV by the ALICE Collaboration. The spin-averaged scattering length and effective range of the p−ϕ interaction are extracted from the fully corrected correlation function employing the Lednický-Lyuboshits approach. In particular, the imaginary part of the scattering length vanishes within uncertainties, indicating that inelastic processes do not play a prominent role for the p−ϕ interaction. These data demonstrate that the interaction is dominated by elastic p−ϕ scattering. Furthermore, an analysis employing phenomenological Gaussian- and Yukawa-type potentials is conducted. Under the assumption of the latter, the N−ϕ coupling constant is found to be gN−ϕ=0.14±0.03(stat)±0.02(syst). This work provides valuable experimental input to accomplish a self-consistent description of the N−ϕ interaction, which is particularly relevant for the more fundamental studies on partial restoration of chiral symmetry in nuclear medium. | en |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | |
dc.publisher | American Physical Society | |
dc.relation.ispartofseries | Physical Review Letters | |
dc.rights | CC BY 4.0 | |
dc.title | Experimental Evidence for an Attractive p−ϕ Interaction | |
dc.type | article | |
dc.identifier.urn | URN:NBN:fi:jyu-202112226096 | |
dc.contributor.laitos | Fysiikan laitos | fi |
dc.contributor.laitos | Department of 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 | 17 | |
dc.relation.volume | 127 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © 2021 CERN | |
dc.rights.accesslevel | openAccess | fi |
dc.subject.yso | hiukkasfysiikka | |
dc.subject.yso | vahva vuorovaikutus | |
dc.format.content | fulltext | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p15576 | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p38676 | |
dc.rights.url | https://creativecommons.org/licenses/by/4.0/ | |
dc.relation.doi | 10.1103/PhysRevLett.127.172301 | |
dc.type.okm | A1 | |