论文标题
中子寿命束异常的可能解释
The possible explanation of neutron lifetime beam anomaly
论文作者
论文摘要
使用UCN存储方法进行的测量结果非常吻合。在标准模型中，通过存储方法一致的中子衰减不对称和中子寿命测量的最新最准确的测量值是一致的。但是，通过Beam Method实验，在$3.6σ$（衰减概率的1％）中存在明显的差异。本文通过Beam Method实验讨论了在中子寿命的测量中差异的可能原因。显然，最可能的原因是，由于质子与残留气体的电荷交换碰撞，在磁性陷阱中存储期间质子的丢失。质子变成中性并离开陷阱，导致注册质子的数量减少，即导致中子衰减的概率降低或测得的中子寿命的增加。
The results of measurements performed using UCN storing method are in good agreement. The latest most accurate measurements of the neutron decay asymmetry and neutron lifetime measurements by storage method are in agreement within the Standard Model. However, there is a significant discrepancy at $3.6σ$ (1% of decay probability) level with beam method experiment. This article discusses the possible causes of discrepancy in the measurements of the neutron lifetime with beam method experiment. The most probable cause, apparently, is the loss of protons in beam method experiment during storage in a magnetic trap due to charge exchange collisions of protons with the residual gas. The proton becomes neutral and leaves the trap, which leads to a decrease in the number of registered protons, i.e. to a decrease in the probability of neutron decay or to an increase in the measured neutron lifetime.
