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arXiv 0807.4329hep-ph
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PVLAS粒子能与天体物理学的边界相容吗?

Can the PVLAS particle be compatible with the astrophysical bounds?

Javier Redondo

摘要:

PVLAS合作组最近宣布了在强磁场中观察到真空的二向色性和双折射现象。这两个理论都是关于存在轻粒子的典型预言,这些轻粒子作为QCD轴子与电磁场相互作用。然而,从PVLAS测量中推断出的相互作用的强度被天体物理学的论点和轴子太阳镜强烈排除,因为这些粒子,作为中微子,将在太阳内部大量产生。在这篇论文中,提出了几个改进的模型,其中天体物理界严重放松,允许PVLAS粒子解释。所有这些模型都涉及到更多新粒子的存在,特别是准光子和毫荷电粒子。还进行了独立于模型的研究,表明PVLAS粒子解释的和解意味着新的低能物理,通常可以精确的实验。最后,如果PVLAS粒子是宇称的,那么最强的排斥边界将不是来自天体物理学,而是来自寻找第五类力的实验。

英文摘要:

The PVLAS collaboration has announced recently the observation dichroism and birefringence of vacuum permeated by a intense magnetic field. Both are typical predictions of the existence of light particles that, as the QCD axion, interact with the electromagnetic field. The strength of the interaction as inferred from the PVLAS measurements is however strongly excluded by astrophysical arguments and axion Helioscopes since these particles, as neutrinos, would be copiously produced in the interior of the Sun. In this Thesis several refined models are presented where the astrophysical bounds are severely relaxed, allowing the PVLAS particle interpretation. All these models involve the existence of further new particles, in particular paraphotons and millicharged particles. Also a model-independent study is performed, showing that the reconciliation of the PVLAS particle interpretation implies new low energy physics, usually accessible to precision experiments. Finally, if the PVLAS particle would be parity even, the strongest exclusion bounds would come, not from astrophysics, but from experiments searching for 5th type forces.

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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