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arXiv 0704.0154nucl-thhep-phnucl-ex
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介质中的强子--理论与实验的对抗

Hadrons in Medium -- Theory confronts experiment

Fabian Eichstaedt, Stefan Leupold, Ulrich Mosel, Pascal Muehlich

摘要:

在这次演讲中,我们简要总结了我们的理论理解介质中的强子自能。与特殊情况下的$ω$介子,我们证明,早期的计算,预测显着降低介质中的质量是基于一个不正确的处理模型拉格朗日,更一致的计算导致显着的扩大,但几乎没有任何质量的变化。我们强调,实验重建强子谱函数从测量的衰变产物总是需要的衰变分支比,这也可能是强烈的质量依赖的知识。它还需要对终态相互作用进行定量可靠的处理,这必须是任何可靠理论的一部分。

英文摘要:

In this talk we briefly summarize our theoretical understanding of in-medium selfenergies of hadrons. With the special case of the $ω$ meson we demonstrate that earlier calculations that predicted a significant lowering of the mass in medium are based on an incorrect treatment of the model Lagrangian; more consistent calculations lead to a significant broadening, but hardly any mass shift. We stress that the experimental reconstruction of hadron spectral functions from measured decay products always requires knowledge of the decay branching ratios which may also be strongly mass-dependent. It also requires a quantitatively reliable treatment of final state interactions which has to be part of any reliable theory.

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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