论文标题
来自质子Bremsstrahlung的Millicharged颗粒在大气中
Millicharged particles from proton bremsstrahlung in the atmosphere
论文作者
论文摘要
轻毫足的颗粒可以通过与大气的宇宙射线碰撞中的介子腐烂产生，从而在大型地下中微子探测器中可检测到信号。在本文中，我们研究了一个新的通道，用于产生大气毫米颗粒，即质子bremsstrahlung工艺。我们发现，与介子衰变相比，质子bremsstrahlung的过程导致毫米颗粒的通量明显更高，并且对于某些质量，导致通量的一阶速度改善。因此，子GEV MCP的$ \ varepsilon^2 $上的超级K约束提高了一半的数量级。我们进一步指出，有关质子Bremsstrahung过程的研究可以扩展到大气碰撞和低能质子加速器中的各种新物理粒子搜索。
Light millicharged particles can be copiously produced from meson decays in cosmic ray collisions with the atmosphere, leading to detectable signals in large underground neutrino detectors. In this paper we study a new channel for generating atmospheric millicharged particles, the proton bremsstrahlung process. We find that the proton bremsstrahlung process leads to a significantly higher flux of millicharged particles compared to meson decays and, for certain masses, results in a one-order-of-magnitude improvement in the flux. Consequently, Super-K constraints on $\varepsilon^2$ for sub-GeV MCPs are improved by half order of magnitude. We further note that the study on the proton bremsstrahlung process can be extended to a variety of new physics particle searches in atmospheric collisions and in low energy proton accelerators.
