A dimension five Lorentz-violating nonminimal coupling for mesons in the KLZ model

We investigate a dimension five Lorentz-violating (LV) nonminimal coupling between the neutral vector meson field strength and the pion current in the context of the Kroll-Lee-Zumino (KLZ) model. In this modified model we study the vector meson dominance (VMD) by means of the imposition of new unive...

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Bibliographic Details
Published in:Nuclear physics. B 2019-08, Vol.945, p.114677, Article 114677
Main Authors: Mouchrek-Santos, V.E., Ferreira, Manoel M., Miller, Carlisson
Format: Article
Language:English
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Summary:We investigate a dimension five Lorentz-violating (LV) nonminimal coupling between the neutral vector meson field strength and the pion current in the context of the Kroll-Lee-Zumino (KLZ) model. In this modified model we study the vector meson dominance (VMD) by means of the imposition of new universality conditions between the couplings that comes from LV contributions. We also show that the LV nonminimal coupling leads to a linear momentum dependence in the timelike pion form factor, that is used to evaluate LV corrections for the muon anomalous magnetic moment. The experimental imprecision of such a quantity allows us to obtain upper bound g¯ξ0
ISSN:0550-3213
1873-1562
DOI:10.1016/j.nuclphysb.2019.114677