论文标题
重力CP违规的实验提示
Experimental hint for gravitational CP violation
论文作者
论文摘要
粒子和反粒子重力相互作用的平等性具有一般相对论，并得到间接观察的支持。对旋转或自旋方向的重力依赖性在非相关物质上受到实验限制。这里开发了一种基于高能康普顿散射的方法，以测量加速带电颗粒的重力相互作用。在这种形式主义中，在HERA规定的康普顿光谱中，反物质在接近100％的置信水平上推测的反物质可能性。但是，相同的数据意味着，电荷的重力违反了13个GEV能量的重力违规，最大量为9 +/- 2 ppt，而空间奇偶校验的重力违反了13 +/- 2 ppt。检测到的不对称提示可与左螺旋电子相对于右螺旋性正电子的更强的重力耦合。
An equality of particle and antiparticle gravitational interactions holds in general relativity and is supported by indirect observations. Gravity dependence on rotation or spin direction is experimentally constrained for non-relativistic matter. Here a method based on high energy Compton scattering is developed to measure the gravitational interaction of accelerated charged particles. Within that formalism the Compton spectra measured at HERA rule out the speculated anti-gravity possibility for antimatter at a confidence level close to 100%. The same data, however, imply a gravitational CP violation around 13 GeV energies, by a maximal amount of 9 +/- 2 ppt for the charge and 13 +/- 3 ppt for the space parity. The detected asymmetry hints for a stronger gravitational coupling to left helicity electrons relative to right helicity positrons.
