论文标题
彩色标量介导的核子衰减至不可见的费米昂
Coloured Scalar Mediated Nucleon Decays to Invisible Fermion
论文作者
论文摘要
我们调查了核子衰变，以照亮由彩色标量$ \ bar s_1 =（\ bar 3，1，-2/2/3）$介导的隐形费米，并将其与结果进行比较，结果来自$ s_1 =（\ bar 3,1,1/3）$。在$ \ bar s_1 =（\ bar 3，1，-2/3）$ upike upike Quarks夫妇到隐形费米昂，而对于$ s_1 =（\ bar 3,1,1/3）$ downlike like Quarks夫妇夫妇对无形的费米昂（Invisible Fermion）。对于小于质量$ m_p -m_k $的质量，质子（中子）可以衰减到$ k $和不可见的费米，而$ \ bar s_1 $和$ s_1 $的质量在区域$ \ sim 10^{15} {15} $ gev中。在树级时，核子向乳头的衰减和隐形费米子可能会发生，但是在$ \ bar s_1 $的情况下，它们来自尺寸-9操作员，因此与腐烂相比，几个数量级被抑制了。对于$（937.8 \，{\ rm mev}，\，\，938.8 \，{\ rm mev}）$的隐形费用质量，$ \ bar s_1 $在循环水平上可能会稳定。这种衰减的分支比率为$ \ le 10^{ - 6} $，它不能解释中子衰减异常，但与Borexino实验绑定的一致。我们对最终状态下的核子样质量为$λ\至χγ$和沉重的强子衰变的低能过程发表评论。
We investigate nucleon decays to light invisible fermion mediated by the coloured scalar $\bar S_1= (\bar 3, 1, -2/3)$ and compare them with the results coming from the mediation of $S_1 = (\bar 3,1,1/3)$. In the case of $\bar S_1= (\bar 3, 1, -2/3)$ up-like quarks couple to the invisible fermion, while in the case of $S_1 = (\bar 3,1,1/3)$ the down-like quarks couple to the invisible fermion. For the mass of invisible fermion smaller than the mass $m_p - m_K$, proton (neutron) can decay to $K$ and invisible fermion and the masses of $\bar S_1$ and $S_1$ are in the region $\sim 10^{15}$ GeV. The decays of nucleons to pions and invisible fermion can occur at the tree-level, but in the case of $\bar S_1$ they come from dimension-9 operator and are therefore suppressed by several orders of magnitude compared to the decays into kaons. For the invisible fermion mass in the range $(937.8 \, {\rm MeV},\, 938.8 \, {\rm MeV})$, decay of neutron $n \toχγ$ induced by $\bar S_1$ is possible at the loop level, while the proton remains stable. The branching ratio of such decay is $\le 10^{-6}$, which does not explain neutron decay anomaly, but is in agreement with the Borexino experiment bound. We comment on low-energy processes with the nucleon-like mass of $χ$ in the final state as $Λ\to χγ$ and heavy hadron decays to invisibles.
