Search for axionlike particles using a variable-baseline photon-regeneration technique.
Search for axionlike particles using a variable-baseline photon-regeneration technique.
复制标题
使用可变基线光子再生技术搜索轴子状粒子。
作者：
A. Chou;W. Wester;A. Baumbaugh;H. Gustafson;Yilda Irizarry;P. Mazur;Jason H. Steffen;R. Tomlin;X. Yang;J. Yoo
我们报告的GammeV实验的第一个结果，寻找毫电子伏特质量粒子与轴子耦合到两个光子。搜索是使用“光透过墙”技术进行的，入射光子振荡成新的弱相互作用粒子，这些粒子能够穿过墙，随后重新生成可检测的光子。该装置的振荡基线是可变的，从而允许不同的粒子质量值的探针。我们没有发现超过背景的事件，并且能够将可能的新标量（赝标量）粒子的双光子耦合限制在无质量粒子的极限中小于3.1x10;（-7）GeV-1（3.5x10;（-7）GeV-1）。
We report the first results of the GammeV experiment, a search for milli-eV mass particles with axionlike couplings to two photons. The search is performed using a "light shining through a wall" technique where incident photons oscillate into new weakly interacting particles that are able to pass through the wall and subsequently regenerate back into detectable photons. The oscillation baseline of the apparatus is variable, thus allowing probes of different values of particle mass. We find no excess of events above background and are able to constrain the two-photon couplings of possible new scalar (pseudoscalar) particles to be less than 3.1x10;(-7) GeV-1 (3.5x10;(-7) GeV-1) in the limit of massless particles.