论文标题
使用$ \barνe^{ - } \！\ rightarrow \barνe^{ - } $ data，使用$ \barνe^{ - ！
Improved constraint on the MINERvA medium energy neutrino flux using $\barνe^{-} \!\rightarrow \barνe^{-}$ data
论文作者
论文摘要
具有精确已知横截面的过程，例如中微子电子弹性散射（$νe^{ - ！通量。这项工作为使用中微子能量\ numubar增强的numi束对电子中微子弹性进行了新的测量。使用背景减法后578个事件的样本与先前对\ numu束的测量和倒数衰减测量的测量相结合，以降低\ numu增强梁中\ numu flux的不确定性从7.6 \％\％\％\％\％\ numubar the \ numubar flux the \ numubar-eNaneans-Enaneans-Enaneans-Enaneans cancemenane conseans-Enaneans-Enlanceans-Enlanceans-Enlanceans中的\ numubar flux。
Processes with precisely known cross sections, like neutrino electron elastic scattering ($νe^{-} \!\rightarrow νe^{-}$) and inverse muon decay ($ν_μe^{-} \!\rightarrow μ^{-} ν_e$) have been used by MINERvA to constrain the uncertainty on the NuMI neutrino beam flux. This work presents a new measurement of neutrino elastic scattering with electrons using the medium energy \numubar enhanced NuMI beam. A sample of 578 events after background subtraction is used in combination with the previous measurement on the \numu beam and the inverse muon decay measurement to reduce the uncertainty on the \numu flux in the \numu-enhanced beam from 7.6\% to 3.3\% and the \numubar flux in the \numubar-enhanced beam from 7.8\% to 4.7\%.
