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arXiv 2004.04611hep-phhep-th
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动力学Majorana中微子质量和轴子

Dynamical Majorana Neutrino Masses and Axions

Jean Alexandre, Nick E. Mavromatos, Alex Soto

摘要:

我们讨论费米子和赝标量场(类轴子粒子(ALP))的动态质量生成,在有效的理论包含汤川型费米子和ALP之间的相互作用的背景下。我们讨论了厄米和非厄米汤川相互作用,这是出于在某些情况下的辐射(异常)马约拉纳不育中微子质量的一些有效场论。后者包含移动对称破缺汤川之间的相互作用不育中微子和ALP。我们表明,对于一个厄米汤川相互作用,没有(伪)标量动力学质量的产生,但有费米子动力学质量的产生,提供一个裸(伪)标量质量。反厄米Yukawa模型的情况正好相反:有(赝)标量动力学质量产生,但没有费米子动力学质量产生.在存在额外的吸引四费米子相互作用的情况下,在适当的条件和耦合范围内,这些模型都能产生费米子动力学质量.

英文摘要:

We discuss dynamical mass generation for fermions and pseudoscalar fields (axion-like particles (ALP)), in the context of effective theories containing Yukawa type interactions between the fermions and ALPs. We discuss both Hermitian and non-Hermitian Yukawa interactions, which are motivated in the context of some scenarios for radiative (anomalous) Majorana sterile neutrino masses in some effective field theories. The latter contain shift-symmetry breaking Yukawa interactions between sterile neutrinos and ALPs. We show that, for a Hermitian Yukawa interaction, there is no (pseudo)scalar dynamical mass generation, but there is fermion dynamical mass generation, provided one adds a bare (pseudo)scalar mass. The situation is opposite for an anti-Hermitian Yukawa model: there is (pseudo)scalar dynamical mass generation, but no fermion dynamical mass generation.In the presence of additional attractive four-fermion interactions, dynamical fermion mass generation can occur in these models, under appropriate conditions and range of their couplings.

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