Meson U(3)L⊗U(3)R chiral theory with flavor and nonet symmetry breaking

E. Gedalin; A. Moalem; L. Razdolskaya

doi:10.1016/j.nuclphysa.2003.12.007

Meson U(3)_L⊗U(3)_R chiral theory with flavor and nonet symmetry breaking

E. Gedalin, A. Moalem, L. Razdolskaya

Department of Physics

Research output: Contribution to journal › Article › peer-review

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Abstract

An extended U(3)_L⊗U(3)_R chiral effective field theory which includes pseudoscalar and vector meson nonets as dynamic variables is presented. The theory combines a hidden local symmetry approach with a general procedure of including the η′ meson into chiral theory, and accounts for direct and indirect flavor and nonet symmetry breaking effects via a mechanism based on the quark mass matrix. The theory is applied to anomalous radiative decays of pseudoscalar and vector mesons, using particle mixing schemes that correspond to different symmetry breaking assumptions and are uniquely determined by the Lagrangian presumed. Radiative decays of light flavor mesons are best explained within the framework of a single mixing angle scheme, providing evidence for SU(3)_F and nonet symmetry breaking. Based on our general treatment of symmetry breaking and the analysis of radiative decays we propose the value θ_P=-14.3±2.2.

Original language	English
Pages (from-to)	125-148
Number of pages	24
Journal	Nuclear Physics A
Volume	732
Issue number	1-4
DOIs	https://doi.org/10.1016/j.nuclphysa.2003.12.007
State	Published - 23 Feb 2004

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.nuclphysa.2003.12.007

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title = "Meson U(3)L⊗U(3)R chiral theory with flavor and nonet symmetry breaking",

abstract = "An extended U(3)L⊗U(3)R chiral effective field theory which includes pseudoscalar and vector meson nonets as dynamic variables is presented. The theory combines a hidden local symmetry approach with a general procedure of including the η′ meson into chiral theory, and accounts for direct and indirect flavor and nonet symmetry breaking effects via a mechanism based on the quark mass matrix. The theory is applied to anomalous radiative decays of pseudoscalar and vector mesons, using particle mixing schemes that correspond to different symmetry breaking assumptions and are uniquely determined by the Lagrangian presumed. Radiative decays of light flavor mesons are best explained within the framework of a single mixing angle scheme, providing evidence for SU(3)F and nonet symmetry breaking. Based on our general treatment of symmetry breaking and the analysis of radiative decays we propose the value θP=-14.3±2.2.",

author = "E. Gedalin and A. Moalem and L. Razdolskaya",

note = "Funding Information: This work was supported in part by the Israel Ministry of Absorption. We thank Professor D. Rich for reading the manuscript.",

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AU - Gedalin, E.

AU - Moalem, A.

AU - Razdolskaya, L.

N1 - Funding Information: This work was supported in part by the Israel Ministry of Absorption. We thank Professor D. Rich for reading the manuscript.

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N2 - An extended U(3)L⊗U(3)R chiral effective field theory which includes pseudoscalar and vector meson nonets as dynamic variables is presented. The theory combines a hidden local symmetry approach with a general procedure of including the η′ meson into chiral theory, and accounts for direct and indirect flavor and nonet symmetry breaking effects via a mechanism based on the quark mass matrix. The theory is applied to anomalous radiative decays of pseudoscalar and vector mesons, using particle mixing schemes that correspond to different symmetry breaking assumptions and are uniquely determined by the Lagrangian presumed. Radiative decays of light flavor mesons are best explained within the framework of a single mixing angle scheme, providing evidence for SU(3)F and nonet symmetry breaking. Based on our general treatment of symmetry breaking and the analysis of radiative decays we propose the value θP=-14.3±2.2.

AB - An extended U(3)L⊗U(3)R chiral effective field theory which includes pseudoscalar and vector meson nonets as dynamic variables is presented. The theory combines a hidden local symmetry approach with a general procedure of including the η′ meson into chiral theory, and accounts for direct and indirect flavor and nonet symmetry breaking effects via a mechanism based on the quark mass matrix. The theory is applied to anomalous radiative decays of pseudoscalar and vector mesons, using particle mixing schemes that correspond to different symmetry breaking assumptions and are uniquely determined by the Lagrangian presumed. Radiative decays of light flavor mesons are best explained within the framework of a single mixing angle scheme, providing evidence for SU(3)F and nonet symmetry breaking. Based on our general treatment of symmetry breaking and the analysis of radiative decays we propose the value θP=-14.3±2.2.

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Meson U(3)_L⊗U(3)_R chiral theory with flavor and nonet symmetry breaking

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