论文标题
Atomki Anomaly in gauged $ u（1）_r $对称模型
Atomki anomaly in gauged $U(1)_R$ symmetric model
论文作者
论文摘要
Atomki合作报告说，在铍核的罕见衰减中已经观察到了意外的过剩。据称，这种过剩的人可以表明存在一个称为$ x $的新玻色子的存在，质量约为17美元。为了求解Atomki异常，我们考虑了一个具有测量$ u（1）_r $对称的模型，并用$ x $玻色子识别新的仪表。我们还介绍了两个$ SU（2）$ Doublet Higgs Bosons和一个Singlet Higgs Boson，并讨论了中微子电子散射非常严格的约束。发现Doublet标量的$ U（1）_r $电荷确定以逃避约束。最后，我们发现可以同时满足Atomki信号和所有实验约束的参数区域。
The Atomki collaboration has reported that unexpected excesses have been observed in the rare decays of Beryllium nucleus. It is claimed that such excesses can suggest the existence of a new boson, called $X$, with the mass of about $17$ MeV. To solve the Atomki anomaly, we consider a model with gauged $U(1)_R$ symmetry and identify the new gauge boson with the $X$ boson. We also introduce two $SU(2)$ doublet Higgs bosons and one singlet Higgs boson, and discuss a very stringent constraint from neutrino-electron scattering. It is found that the $U(1)_R$ charges of the doublet scalars are determined to evade the constraint. In the end, we find the parameter region in which the Atomki signal and all experimental constraints can be simultaneously satisfied.
