Positive and negative parity hyperons in nuclear medium

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dc.authorid0000-0003-3741-2167
dc.authorid0000-0002-8290-434X
dc.authorid0000-0003-3131-9463
dc.contributor.authorAzizi, Kazem
dc.contributor.authorEr, Nuray
dc.contributor.authorSundu, Hayriye
dc.date.accessioned2021-06-23T19:37:40Z
dc.date.available2021-06-23T19:37:40Z
dc.date.issued2015
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractThe effects of the nuclear medium on the residue, mass, and self-energy of the positive-and negative-parity Sigma, Lambda, and Xi hyperons are investigated using the QCD sum-rule method. In the calculations, the general interpolating currents of hyperons with an arbitrary mixing parameter are used. We compare the results obtained in medium with those of the vacuum and calculate the shifts in the corresponding parameters. It is found that the shifts on the residues in nuclear matter are overall positive for both the positive- and negative-parity hyperons, except for the positive-parity Sigma hyperon which has a negative shift. The shifts on the masses of these baryons are found to be negative. The shifts on the residues and masses of negative-parity states are large compared to those of positive-parity states. The maximum shift belongs to the residue of the negative-parity Lambda hyperon. The vector self-energies gained by the positive-parity baryons are large compared to the vector self-energies of the negative-parity particles. The maximum value of the vector self-energy belongs to the positive-parity Sigma hyperon. The numerical values are compared with the existing predictions in the literature.en_US
dc.identifier.doi10.1103/PhysRevD.92.054026
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-84943756857en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://doi.org/10.1103/PhysRevD.92.054026
dc.identifier.urihttps://hdl.handle.net/20.500.12491/8194
dc.identifier.volume92en_US
dc.identifier.wosWOS:000361670200007en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorEr, Nuray
dc.language.isoenen_US
dc.publisherAmer Physical Socen_US
dc.relation.ispartofPhysical Review Den_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNuclear Mediumen_US
dc.subjectNegative Parity Hyperons
dc.subjectPositive Parity Hyperons
dc.titlePositive and negative parity hyperons in nuclear mediumen_US
dc.typeArticleen_US

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