$Z_0(57)$和$E(38)$：标准模型中可能出现的意外
$Z_0(57)$ and $E(38)$: possible surprises in the Standard Model
摘要：
随着在大型强子对撞机上观测到希格斯玻色子的报道，粒子物理学的标准模型就其粒子内容而言似乎已经完成。然而，在低能量和中等能量的一些实验数据表明，可能有两个惊喜。首先，我们提出了一个试探性的新玻色子$Z_0(57)$，质量约为57 GeV的基础上，小的增强，我们观察到在几个实验中，使用最近的数据在大型强子对撞机以及更古老的LEP。如果得到证实，我们将这个新粒子解释为复合$Z$矢量玻色子的赝标量或标量伙伴。其次，我们主张存在一个非常轻的无自旋玻色子$E(38)$，可能是一个标量，质量为38 MeV，衰变为两个光子。支持这种新的轻玻色子的理论论据和实验信号将被提出，包括最近在杜布纳联合核研究所的直接实验确认。
英文摘要：
With the reported observation of the Higgs boson at the LHC, the Standard Model of particle physics seems to be complete now as for its particle content. However, several experimental data at low and intermediate energies indicate that there may be two surprises. First we propose a tentative new boson $Z_0(57)$, with a mass of about 57 GeV, on the basis of small enhancements we observe in several experiments, using recent data obtained at the LHC as well as much older ones from LEP. If confirmed, we interpret this new particle as a pseudoscalar or scalar partner of a composite $Z$ vector boson. Secondly, we advocate the existence of a very light spinless boson $E(38)$, probably a scalar, with a mass of 38 MeV and decaying into two photons. Theoretical arguments and experimental signals supporting such a novel light boson will be presented, including a recent direct experimental confirmation at the Joint Institute for Nuclear Research in Dubna.
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