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arXiv 1007.2167hep-phhep-ex
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用非标准相互作用改进LMA预测:太阳物质中的中微子衰变?

Improving LMA predictions with non-standard interactions: neutrino decay in solar matter?

C. R. Das, Joao Pulido

摘要:

一段时间以来,人们已经知道,对观测到的太阳中微子赤字的成熟的LMA解决方案未能预测SuperKamiokande的平坦能谱,而不是数据所表明的。与数据相比,它还导致氯率似乎过高。我们调查可能的解决方案,这些不一致的非标准中微子相互作用,假设他们来作为额外的贡献的$ν_αν_β$和$ν_αe$顶点,影响中微子在太阳中的传播和检测。我们发现,在非标准耦合的许多可能性,只有对角线虚的导致一个解决方案的LMA预测和数据之间的紧张局势,这意味着太阳物质中的中微子不稳定性。幺正性的要求进一步限制了解决方案,中微子衰变为反中微子和太阳内的majoron是一个有利的。然而,由于NSI,反中微子的概率太小,无法通过实验从太阳观测到反中微子。

英文摘要:

It has been known for some time that the well established LMA solution to the observed solar neutrino deficit fails to predict a flat energy spectrum for SuperKamiokande as opposed to what the data indicates. It also leads to a Chlorine rate which appears to be too high as compared to the data. We investigate the possible solution to these inconsistencies with non standard neutrino interactions, assuming that they come as extra contributions to the $ν_αν_β$ and $ν_αe$ vertices that affect both the propagation of neutrinos in the sun and their detection. We find that, among the many possibilities for non standard couplings, only the diagonal imaginary ones lead to a solution to the tension between the LMA predictions and the data, implying neutrino instability in the solar matter. Unitarity requirements further restrict the solution and a neutrino decay into an antineutrino and a majoron within the sun is the one favoured. Antineutrino probability is however too small to open the possibility of experimentally observing antineutrinos from the sun due to NSI.

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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