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arXiv 1412.3733nucl-thhep-phnucl-ex
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基于输运的双轻子产生方法

Dilepton Production in Transport-based Approaches

Janus Weil, Stephan Endres, Hendrik van Hees, Marcus Bleicher, Ulrich Mosel

摘要:

我们调查的双轻子生产的运输为基础的方法,并表明,重子耦合的$ρ$介子代表最重要的成分,为理解测量的双轻子谱。在SIS能量下,重子共振自然起着重要作用,并通过Dalitz贡献影响真空光谱,这可以在输运模拟中很好地捕获。GSI最近的π介子束测量将有助于进一步限制所涉及的共振的性质。

英文摘要:

We investigate dilepton production in transport-based approaches and show that the baryon couplings of the $ρ$ meson represent the most important ingredient for understanding the measured dilepton spectra. At SIS energies, the baryon resonances naturally play a major role and affect already the vacuum spectra via Dalitz-like contributions, which can be captured well in transport simulations. Recent pion-beam measurements at GSI will help to constrain the properties of the involved resonances further.

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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