NJL interaction derived from QCD: vector and axial-vector mesons
In previous works effective non-local \(SU(2)\times SU(2)\) NJL model was derived in the framework of the fundamental QCD. All the parameters of the model are expressed through QCD parameters: current light quark mass \(m_0\) and average non-perturbative \(\alpha_s\). The results for scalar and pseu...
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| description | In previous works effective non-local \(SU(2)\times SU(2)\) NJL model was derived in the framework of the fundamental QCD. All the parameters of the model are expressed through QCD parameters: current light quark mass \(m_0\) and average non-perturbative \(\alpha_s\). The results for scalar and pseudo-scalar mesons are in satisfactory agreement to existing data. In the present work the same model without introduction of any additional parameters is applied for a description of masses and strong decay widths of \(\rho\)- and \(a_1\)-mesons. The results for both scalar and vector sectors agree with data with only one adjusted parameter \(m_0\), with account of average \(\alpha_s \simeq 0.415\), which is obtained in a previous work as well. |
| doi_str_mv | 10.48550/arxiv.0809.4951 |
| format | Article |
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All the parameters of the model are expressed through QCD parameters: current light quark mass \(m_0\) and average non-perturbative \(\alpha_s\). The results for scalar and pseudo-scalar mesons are in satisfactory agreement to existing data. In the present work the same model without introduction of any additional parameters is applied for a description of masses and strong decay widths of \(\rho\)- and \(a_1\)-mesons. The results for both scalar and vector sectors agree with data with only one adjusted parameter \(m_0\), with account of average \(\alpha_s \simeq 0.415\), which is obtained in a previous work as well.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.0809.4951</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Mathematical models ; Mesons ; Parameters ; Physics - High Energy Physics - Phenomenology ; Quantum chromodynamics ; Vector mesons</subject><ispartof>arXiv.org, 2008-09</ispartof><rights>2008. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). 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| subjects | Mathematical models Mesons Parameters Physics - High Energy Physics - Phenomenology Quantum chromodynamics Vector mesons |
| title | NJL interaction derived from QCD: vector and axial-vector mesons |
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