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arXiv 1006.4783nucl-thhep-ph
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准弹性区的电弱核响应

Electroweak nuclear response in quasi-elastic regime

Omar Benhar, Pietro Coletti, Davide Meloni

摘要:

MiniBooNE合作使用碳靶测量的双微分带电电流中微子截面的可用性,允许系统地比较准弹性电子和中微子散射中的核效应。我们的研究结果,基于脉冲近似方案和国家的最先进的核谱函数模型,表明电子截面和通量平均中微子截面,对应于相同的目标和可比的运动学条件,不能在相同的理论方法内使用从氘测量得到的核子轴向质量的值来描述。我们分析了电子散射数据处理的假设,并认为中微子数据的描述将需要一个新的{ \em范式},适用于轻子运动学不完全确定的过程。

英文摘要:

The availability of the double-differential charged-current neutrino cross section, measured by the MiniBooNE collaboration using a carbon target, allows for a systematic comparison of nuclear effects in quasi-elastic electron and neutrino scattering. The results of our study, based on the impulse approximation scheme and a state-of-the-art model of the nuclear spectral functions, suggest that the electron cross section and the flux averaged neutrino cross sections, corresponding to the same target and comparable kinematical conditions, cannot be described within the same theoretical approach using the value of the nucleon axial mass obtained from deuterium measurements. We analyze the assumptions underlying the treatment of electron scattering data, and argue that the description of neutrino data will require a new {\em paradigm}, suitable for application to processes in which the lepton kinematics is not fully determined.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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