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arXiv 1707.02579astro-ph.COhep-ph
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用宇宙学数据约束动力学中微子质量产生

Constraining dynamical neutrino mass generation with cosmological data

S. M. Koksbang, S. Hannestad

摘要:

我们研究的模型中,中微子的质量是在宇宙学后期动态生成的。我们的研究是纯粹的现象学和参数化的三个有效的参数表征红移的质量产生,过渡区的宽度,和现今的中微子质量。我们还研究了中微子在产生质量的时候成为强自相互作用的可能性。我们发现,在一些情况下,目前的CMB,BAO和超新星的数据允许与大的中微子质量的模型。允许质量范围的增加使得在直接探测实验中测量非零中微子质量成为可能,例如KATRIN。有趣的是,我们还发现,有允许的模型中,中微子成为强烈的自相互作用的时代周围的重组。

英文摘要:

We study models in which neutrino masses are generated dynamically at cosmologically late times. Our study is purely phenomenological and parameterized in terms of three effective parameters characterizing the redshift of mass generation, the width of the transition region, and the present day neutrino mass. We also study the possibility that neutrinos become strongly self-interacting at the time where the mass is generated. We find that in a number of cases, models with large present day neutrino masses are allowed by current CMB, BAO and supernova data. The increase in the allowed mass range makes it possible that a non-zero neutrino mass could be measured in direct detection experiments such as KATRIN. Intriguingly we also find that there are allowed models in which neutrinos become strongly self-interacting around the epoch of recombination.

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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