Publication:
Mott Dissociation and Kaon to Pion Ratio in the EPNJL Model

Дата
2021
Авторы
Friesen, A. V.
Kalinovsky, Y. L.
Radzhabov, A. E.
Blaschke, D. B.
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Научные группы
Организационные подразделения
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Аннотация
© 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.
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Цитирование
Mott 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
URI
https://www.doi.org/10.1134/S1063779621040146
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85114303812&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000698391900021
 https://openrepository.mephi.ru/handle/123456789/24670
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