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arXiv 1301.1383hep-phnucl-th
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重子的动力学结构

Dynamical Structure of Baryons

A. Aleksejevs, S. Barkanova

摘要:

康普顿散射提供了一个独特的机会来研究强子的动力学结构在一个很宽的运动学范围内,与极化率特征的强子活动的内部自由度。本文计算并详细分析了最低质量SU(3)八重态重子的电磁和自旋相关的动力学极化率。这些广泛的计算是可能的,最近实施的半自动化计算的手征微扰理论,它允许评估从康普顿散射的极化率到下一个领先的顺序。的依赖范围的光子能量覆盖的介子光生通道的大部分进行了分析。

英文摘要:

Compton scattering offers a unique opportunity to study the dynamical structure of hadrons over a wide kinematic range, with polarizabilities characterizing the hadron active internal degrees of freedom. We present calculations and detailed analysis of electric and magnetic and the spin-dependent dynamical polarizabilities for the lowest in mass SU(3) octet of baryons. These extensive calculations are made possible by the recent implementation of semi-automatized calculations in chiral perturbation theory which allows evaluating polarizabilities from Compton scattering up to next-to-the-leading order. The dependencies for the range of photon energies covering the majority of the meson photoproduction channels are analyzed.

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