Space- and time-like form factors for $ω\toπγ^*$ and $K^*\to Kγ^*$ in light-front quark model

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dc.creatorChoi, Ho-Meoyng
dc.date2008-03-21
dc.date.accessioned2026-07-07T11:33:17Z
dc.date.available2026-07-07T11:33:17Z
dc.descriptionWe investigate space- and time-like form factors for $ω\toπγ^*$ and $K^*\to Kγ^*$ decays using the light-front quark model constrained by the variational principle for the QCD-motivated effective Hamiltonian. The momentum dependent space-like form factors are obtained in the $q^+=0$ frame and then analytically continued to the time-like region. Our prediction for the time-like form factor $F_{ωπ}(q^2)$ is in good agreement with the experimental data. We also find that the space-like form factor $F_{K^{*\pm}K^{\pm}}(Q^2)$ for charged kaons encounters a zero because of the negative interference between the two currents to the quark and the antiquark.
dc.description4pages, 4figures
dc.identifierhttps://arxiv.org/abs/0803.3100
dc.identifierhttp://arxiv.org/abs/0803.3100
dc.identifierPhys.Rev.D77:097301,2008
dc.identifierdoi:10.1103/PhysRevD.77.097301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197839
dc.subjectHigh Energy Physics - Phenomenology
dc.titleSpace- and time-like form factors for $ω\toπγ^*$ and $K^*\to Kγ^*$ in light-front quark model
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