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arXiv 2005.12304hep-phastro-ph.HEhep-exhep-th
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从散射到弱引力猜想对中子星的中微子电荷约束

Neutrino charge constraints from scattering to the weak gravity conjecture to neutron stars

Arindam Das, Diptimoy Ghosh, Carlo Giunti, Arun Thalapillil

摘要:

在粒子物理学标准模型的各种扩展中,甚至在没有中微子质量的第三代标准模型中,中微子都被允许带有非常小的电荷。在回顾了允许出现这种收费的理论方案后,我们讨论了现有的观测极限,并推导出新的严格的直接上限的μ子和τ中微子的费用。我们还指出了一个由弱引力猜想得到的中微子荷的味普适下界,该猜想是基于引力是最弱力的假设。最后,我们提出了一个新的风味普遍的中微子电荷的上限的基础上天体物理观测的磁星。

英文摘要:

In various extensions of the Standard Model of particle physics, and intriguingly even in the three-generation Standard Model without neutrino masses, neutrinos are allowed to have very tiny electric charges. After a review of the theoretical scenarios that allow the emergence of such charges, we discuss the existing observational limits and we derive new stringent direct upper bounds for the charges of the muon and tau neutrinos. We also point out a flavor-universal lower bound on neutrino charges which is obtained from the weak gravity conjecture, that is based on the hypothesis that gravity is the weakest force. We finally present a new flavor-universal upper bound on neutrino charges based on astrophysical observations of Magnetars.

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