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dc.contributor.authorFariborz, Amir H.
dc.contributor.authorJora, Renata
dc.creator
dc.date.accessioned2017-12-15T18:55:05Z
dc.date.available2017-12-15T18:55:05Z
dc.date.issued2017
dc.identifier.citationFariborz, A. H., & Jora, R. (2017). Electromagnetic trace anomaly in a generalized linear sigma model. Physical Review D, 96(9), 6. doi:10.1103/PhysRevD.96.096021en_US
dc.identifier.issn2470-0010
dc.identifier.urihttp://hdl.handle.net/1951/69525
dc.description.abstractWe build the electromagnetic trace anomaly effective term for a generalized linear sigma model with two chiral nonets, one with a quark-antiquark structure and the other one with a four-quark content. In the leading order of this framework, we study the decays into two photons of the lowest isosinglet scalar mesons. We find that the direct inclusion of underlying mixing among two- and four-quark components in the trace anomaly term is essential in order for the model prediction to agree with the available experimental data on the decay width of f0ð980Þ to two photons. Consequently, this sets a lower bound of 0.5 KeVon the decay with of f0ð500Þ to two photons.en_US
dc.description.sponsorshipDepartment of Mathematics and Physics, SUNY Polytechnic Institute, Utica, New York 13502, USA National Institute of Physics and Nuclear Engineering, P.O. Box MG-6, Bucharest-Magurele, Romaniaen_US
dc.publisherAmerican Physical Societyen_US
dc.titleElectromagnetic trace anomaly in a generalized linear sigma modelen_US
dc.title.alternativePhysical Review Den_US
dc.typeArticleen_US


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