论文标题
中微子背景中的中微力
Neutrino forces in neutrino backgrounds
论文作者
论文摘要
由于交换了一对中微子，标准模型预测了与$ g_f^2/r^5 $成正比的远距离力。这种量子力很弱，尚未观察到。在本文中，我们在中微子背景存在的情况下计算这种力，无论是各向同性和方向背景中微子。我们发现，对于定向背景的情况，该力可以具有$ 1/r $的依赖性，与真空案例相比，它可以显着增强。特别是，由反应堆，太阳能和超新星中微子引起的背景影响通过许多数量级增强了力。但是，增强仅出现在平行于背景中微子方向的方向上。我们讨论了在中微子背景中检测中微子力的实验前景，并发现该作用接近当前第五力实验的可用灵敏度。然而，中微子通量和测试质量的角度扩散降低了这种力的强度。结果令人鼓舞，要求进行详细的实验研究，以检查是否可以探测效果。
The Standard Model predicts a long-range force, proportional to $G_F^2/r^5$, between fermions due to the exchange of a pair of neutrinos. This quantum force is feeble and has not been observed yet. In this paper, we compute this force in the presence of neutrino backgrounds, both for isotropic and directional background neutrinos. We find that for the case of directional background the force can have a $1/r$ dependence and it can be significantly enhanced compared to the vacuum case. In particular, background effects caused by reactor, solar, and supernova neutrinos enhance the force by many orders of magnitude. The enhancement, however, occurs only in the direction parallel to the direction of the background neutrinos. We discuss the experimental prospects of detecting the neutrino force in neutrino backgrounds and find that the effect is close to the available sensitivity of the current fifth force experiments. Yet, the angular spread of the neutrino flux and that of the test masses reduce the strength of this force. The results are encouraging and a detailed experimental study is called for to check if the effect can be probed.
