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Mott Dissociation and Kaon to Pion Ratio in the EPNJL Model

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dc.contributor.authorFriesen, A. V.
dc.contributor.authorKalinovsky, Y. L.
dc.contributor.authorRadzhabov, A. E.
dc.contributor.authorBlaschke, D. B.
dc.date.accessioned2024-11-29T20:12:44Z
dc.date.available2024-11-29T20:12:44Z
dc.date.issued2021
dc.description.abstract© 2021, Pleiades Publishing, Ltd.Abstract: The behaviour of pseudoscalar mesons within the SU(3) PNJL-like models is considered for finite T and (Formula presented.). We compare the pole approximation (Breit–Wigner) with the Beth–Uhlenbeck approach. We evaluate the (Formula presented.) ratios along the phase transition line in the T–(Formula presented.) plane with constant and (Formula presented.)-dependent pion and strange quark chemical potentials. Using the model, we can show that the splitting of kaon and anti-kaon masses appears as a result of introduction of density and this explains the difference in the (Formula presented.) ratio and (Formula presented.) ratio at low (Formula presented.) and their tendency to the same value at high (Formula presented.). A sharp “horn” effect in the (Formula presented.) ratio is explained by the enhanced pion production which can be described by occurrence of a nonequilibrium pion chemical potential of the order of the pion mass. We elucidate that the horn effect is not related to the existence of a critical endpoint in the QCD phase diagram.
dc.format.extentС. 609-614
dc.identifier.citationMott Dissociation and Kaon to Pion Ratio in the EPNJL Model / Friesen, A.V. [et al.] // Physics of Particles and Nuclei. - 2021. - 52. - № 4. - P. 609-614. - 10.1134/S1063779621040146
dc.identifier.doi10.1134/S1063779621040146
dc.identifier.urihttps://www.doi.org/10.1134/S1063779621040146
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85114303812&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000698391900021
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/24670
dc.relation.ispartofPhysics of Particles and Nuclei
dc.titleMott Dissociation and Kaon to Pion Ratio in the EPNJL Model
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue4
oaire.citation.volume52
relation.isOrgUnitOfPublicationdcdb137c-0528-46a5-841b-780227a67cce
relation.isOrgUnitOfPublication.latestForDiscoverydcdb137c-0528-46a5-841b-780227a67cce
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