论文标题
迷你酮异常的标准模型解释
A Standard Model explanation for the MiniBooNE anomaly
论文作者
论文摘要
我们介绍了对MiniBoone实验数据的新分析的结果，这些结果考虑了光子的其他背景。迷你蛋白将光子产量的速率归一化为$π^0 $生产率。我们研究了碳核（a = 12），研究中微子中微子诱导的$π^0 $ /光子的产生（$ν_μ+ a \至ν_μ+1π^0 /γ+ x $）。我们的结论基于Mainz Mami Accelerator的A2协作的光子核相互作用的实验数据。我们在中间状态的衰减（非谐振n，$δ$共振，更高共振）的近似值中工作，不受其生产渠道的影响，通过光子或Z玻色子。 $1π^0+x $生产量表为$^{2/3} $，核的表面积。同时，在中间状态衰减中产生的光子不连贯将离开核，该横截面将与原子核的原子数成正比。我们还考虑了光子的连贯发射。我们表明，新的光子背景可以解释Miniboone低能量过量的一部分，因此显着将无法解释的小型电子事件的数量从$5.1σ$降低到$3.6σ$。
We present the results of a new analysis of the data of the MiniBooNE experiment taking into account the additional background of photons. MiniBooNE normalises the rate of photon production to the measured $π^0$ production rate. We study neutral current (NC) neutrino-induced $π^0$/photon production ($ν_μ+ A \to ν_μ+1π^0 / γ+ X$) on carbon nucleus (A=12). Our conclusion is based on experimental data for photon-nucleus interactions from the A2 collaboration at the Mainz MAMI accelerator. We work in the approximation that decays of the intermediate states (non-resonant N, $Δ$ resonance, higher resonances) unaffected by its production channel, via photon or Z boson. $1π^0+X$ production scales as A$^{2/3}$, the surface area of the nucleus. Meanwhile the photons incoherently created in intermediate states decays will leave the nucleus, and that cross section will be proportional to the atomic number of the nucleus. We also took into account the coherent emission of photons. We show that the new photon background can explain part of the MiniBooNE low-energy excess, thus significantly lowering the number of unexplained MiniBooNE electron-like events from $5.1σ$ to $3.6σ$.
