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Scientific paper - Original scientific paper
η and η′ mesons in the Dyson-Schwinger approach at finite temperature
Physical Review D - Particles, Fields, Gravitation and Cosmology, 76 (2007), 9; 096009. https://doi.org/10.1103/PhysRevD.76.096009
Horvatić, Davor; Klabučar, Dubravko; Radzhabov, A. E.

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Horvatić, D., Klabučar, D. & Radzhabov, A. E. (2007). η and η′ mesons in the Dyson-Schwinger approach at finite temperature. Physical Review D - Particles, Fields, Gravitation and Cosmology, 76. (9). doi: 10.1103/PhysRevD.76.096009

Horvatić, Davor, et al. "η and η′ mesons in the Dyson-Schwinger approach at finite temperature." Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 76, no. 9, 2007. https://doi.org/10.1103/PhysRevD.76.096009

Horvatić, Davor, Dubravko Klabučar and A. E. Radzhabov. "η and η′ mesons in the Dyson-Schwinger approach at finite temperature." Physical Review D - Particles, Fields, Gravitation and Cosmology 76, no. 9 (2007). https://doi.org/10.1103/PhysRevD.76.096009

Horvatić, D., Klabučar, D. and Radzhabov, A. E. (2007) 'η and η′ mesons in the Dyson-Schwinger approach at finite temperature', Physical Review D - Particles, Fields, Gravitation and Cosmology, 76(9). doi: 10.1103/PhysRevD.76.096009

Horvatić D, Klabučar D, Radzhabov AE. η and η′ mesons in the Dyson-Schwinger approach at finite temperature. Physical Review D - Particles, Fields, Gravitation and Cosmology [Internet]. 2007 [cited 2024 December 29];76(9). doi: 10.1103/PhysRevD.76.096009

D. Horvatić, D. Klabučar and A. E. Radzhabov, "η and η′ mesons in the Dyson-Schwinger approach at finite temperature", Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 76, no. 9, 2007. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:480454. [Accessed: 29 December 2024]

Metadata
Title (english)η and η′ mesons in the Dyson-Schwinger approach at finite temperature
AuthorDavor Horvatić
AuthorDubravko Klabučar
AuthorA. E. Radzhabov
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
We study the temperature dependence of the pseudoscalar meson properties in a relativistic bound-state approach exhibiting the chiral behavior mandated by QCD. Concretely, we adopt the Dyson-Schwinger approach with a rank-2 separable model interaction. After extending the model to the strange sector and fixing its parameters at zero temperature, T=0, we study the T-dependence of the masses and decay constants of all ground-state mesons in the pseudoscalar nonet. Of chief interest are η and η'. The influence of the QCD axial anomaly on them is successfully obtained through the Witten-Veneziano relation at T=0. The same approach is then extended to T>0, using lattice QCD results for the topological susceptibility. The most conspicuous finding is an increase of the η' mass around the chiral restoration temperature T_Ch, which would suggest a suppression of η' production in relativistic heavy-ion collisions. The increase of the η' mass may also indicate that the extension of the Witten-Veneziano relation to finite temperatures becomes unreliable around and above T_Ch. Possibilities of an improved treatment are discussed.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review D - Particles, Fields, Gravitation and Cosmology
Numberingvol. 76, no. 9, 096009
p-ISSN1550-7998
e-ISSN1550-2368
DOIhttps://doi.org/10.1103/PhysRevD.76.096009
URN:NBNurn:nbn:hr:217:480454
Publication2007
ProjectNumber: 119-0982930-1016
Title (croatian): Elementarne čestice, teorija polja i kozmologija
Leader: Ivica Picek
Jurisdiction: Croatia
Funding stream: ZP
Document URLhttp://link.aps.org/doi/10.1103/PhysRevD.76.096009
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteCopyright (2007) by the American Physical Society. Received 10 August 2007; published 29 November 2007.
Created on2019-10-18 15:41:57