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arXiv 1012.2728hep-phastro-ph.HE
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超高能中微子的SUSY重整化群效应

SUSY Renormalization Group Effects in Ultra High Energy Neutrinos

M. Bustamante, A. M. Gago, J. Jones-Perez

摘要:

本文探讨了最小超对称标准模型中中微子混合参数的重整化群运行是否能被活动星系核中的超高能中微子探测的问题。我们使用活动星系核产生的中微子通量的比率作为观测量,重点研究了四种不同的中微子产生模型:$(Φ_{ν_e+\barν_e}^0 : Φ_{ν_μ+\barν_μ}^0 : Φ_{ν_τ+\barν_τ}^0)$ =(1:2:0),(0:1:0),(1:0:0)和(1:1:0)。考虑到实验观测偏差的前景,我们发现有必要对$Q^2 \geq 10^7$ GeV的转移动量施加截止值$^2$。然而,这个条件,加上预期的低扩散AGN中微子通量的值,产生一个可以忽略不计的事件率在公里级的切伦科夫探测器,如冰立方。

英文摘要:

We have explored the question of whether the renormalization group running of the neutrino mixing parameters in the Minimal Supersymmetric Standard Model is detectable with ultra-high energy neutrinos from active galactic nuclei (AGN). We use as observables the ratios of neutrino fluxes produced at the AGN, focusing on four different neutrino production models: $(Φ_{ν_e+\barν_e}^0 : Φ_{ν_μ+\barν_μ}^0 : Φ_{ν_τ+\barν_τ}^0)$ = (1:2:0), (0:1:0), (1:0:0), and (1:1:0). The prospects for observing deviations experimentally are taken into consideration, and we find out that it is necessary to impose a cut-off on the transferred momentum of $Q^2 \geq 10^7$ GeV$^2$. However, this condition, together with the expected low value of the diffuse AGN neutrino flux, yields a negligible event rate at a km-scale Cherenkov detector such as IceCube.

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