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arXiv 1606.06372hep-phhep-ex
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赝狄拉克比诺的中微子质量

Neutrino masses from a pseudo-Dirac Bino

Pilar Coloma, Seyda Ipek

摘要:

我们证明了在$U(1)_R$对称超对称模型中,双中微子和它的狄拉克伙伴(单中微子)可以扮演右手中微子的角色,产生中微子质量和混合,而不需要传统的双线性或三线性R宇称破坏算子.这两个粒子形成一个伪狄拉克对,即“双$ν$ o”。中微子-双$ν$ o扇区产生了一个反跷跷板结构,最轻的中微子被预测为无质量的。与大多数使用重右手中微子的模型不同,双$ν$ o可以通过与有色粒子的相互作用在LHC中大量产生,同时考虑到无中微子双β衰变和带电轻子味破坏的低能约束。

英文摘要:

We show that, in $U(1)_R$-symmetric supersymmetric models, the bino and its Dirac partner (the singlino) can play the role of right-handed neutrinos and generate the neutrino masses and mixing, without the need for traditional bilinear or trilinear R-parity violating operators. The two particles form a pseudo-Dirac pair, the `bi$ν$o'. An Inverse Seesaw texture is generated for the neutrino-bi$ν$o sector, and the lightest neutrino is predicted to be massless. Unlike in most models with heavy right-handed neutrinos, the bi$ν$o can be sizably produced at the LHC through its interactions with colored particles, while respecting low energy constraints from neutrinoless double-beta decay and charged lepton flavor violation.

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