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Scientific paper - Original scientific paper
η′ and η mesons at high T when the U_A(1) and chiral symmetry breaking are tied
Physical Review D, 99 (2019), 1; 014007. https://doi.org/10.1103/PhysRevD.99.014007
Horvatić, Davor; Kekez, Dalibor; Klabučar, Dubravko

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Horvatić, D., Kekez, D. & Klabučar, D. (2019). η′ and η mesons at high T when the U_A(1) and chiral symmetry breaking are tied. Physical Review D, 99. (1). doi: 10.1103/PhysRevD.99.014007

Horvatić, Davor, et al. "η′ and η mesons at high T when the U_A(1) and chiral symmetry breaking are tied." Physical Review D, vol. 99, no. 1, 2019. https://doi.org/10.1103/PhysRevD.99.014007

Horvatić, Davor, Dalibor Kekez and Dubravko Klabučar. "η′ and η mesons at high T when the U_A(1) and chiral symmetry breaking are tied." Physical Review D 99, no. 1 (2019). https://doi.org/10.1103/PhysRevD.99.014007

Horvatić, D., Kekez, D. and Klabučar, D. (2019) 'η′ and η mesons at high T when the U_A(1) and chiral symmetry breaking are tied', Physical Review D, 99(1). doi: 10.1103/PhysRevD.99.014007

Horvatić D, Kekez D, Klabučar D. η′ and η mesons at high T when the U_A(1) and chiral symmetry breaking are tied. Physical Review D [Internet]. 2019 [cited 2024 December 29];99(1). doi: 10.1103/PhysRevD.99.014007

D. Horvatić, D. Kekez and D. Klabučar, "η′ and η mesons at high T when the U_A(1) and chiral symmetry breaking are tied", Physical Review D, vol. 99, no. 1, 2019. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:336024. [Accessed: 29 December 2024]

Metadata
Title (english)η′ and η mesons at high T when the U_A(1) and chiral symmetry breaking are tied
AuthorDavor Horvatić
MBZ: 234511
AuthorDalibor Kekez
MBZ: 107903
AuthorDubravko Klabučar
MBZ: 90094
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The approach to the η′−η complex employing chirally well-behaved quark-antiquark bound states and incorporating the non-Abelian axial anomaly of QCD through the generalization of the Witten-Veneziano relation is extended to finite temperatures. Employing the chiral condensate has led to a sharp chiral and UA(1) symmetry restoration, but with the condensates of quarks with realistic explicit chiral symmetry breaking— which exhibit a smooth, crossover chiral symmetry restoration in qualitative agreement with lattice QCD results—we get a crossover UA(1) transition with a smooth and gradual melting of anomalous mass contributions. In this way, we obtain a substantial decrease in the η′ mass around the chiral transition temperature, but no decrease in the η mass. This is consistent with current empirical evidence.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review D
Numberingvol. 99, no. 1, 014007
p-ISSN2470-0010
DOIhttps://doi.org/10.1103/PhysRevD.99.014007
URN:NBNurn:nbn:hr:217:336024
Publication2019
Document URLhttps://journals.aps.org/prd/abstract/10.1103/PhysRevD.99.014007
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© 2019 American Physical Society. Published under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. Received 16 October 2018; Published 9 January 2019.
Created on2020-03-01 19:23:06