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arXiv 1002.1155hep-ph
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中性矢量介子的协变研究:动力学性质和电磁衰变宽度

A covariant investigation of Neutral Vector Mesons: dynamical properties and electromagnetic decay widths

T. Frederico, E. Pace, S. Pisano, G. Salme'

摘要:

一个简单的,但完全协变模型描述中性矢量介子,在轻和重部门,简要说明。我们的相对论组分模型的主要组成部分是i)矢量介子的Bethe-Salpeter顶点的Anterior,和ii)电磁衰变宽度的Mandelstam式。我们的方法的自由参数是固定的,通过比较与价横动量分布,$n(k_\perp)$,获得内再现质谱的唯象光锋哈密顿动力学模型。的横向动量分布,部分子分布和电磁衰减常数的初步结果显示。

英文摘要:

A simple, but fully-covariant model for describing neutral Vector Mesons, in both light and heavy sectors, is briefly illustrated. The main ingredients of our relativistic constituent model are i) an Ansatz for the Bethe-Salpeter vertex for Vector Mesons, and ii) a Mandelstam-like formula for the electromagnetic decay widths. The free parameters of our approach are fixed through a comparison with the valence transverse-momentum distribution, $n(k_\perp)$, obtained within phenomenological Light-Front Hamiltonian Dynamics models reproducing the mass spectra. Preliminary results for the transverse-momentum distributions, the parton distribution and the electromagnetic decay constants are shown.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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