New exclusion limits on scalar and pseudoscalar axionlike particles from light shining through a wall
New exclusion limits on scalar and pseudoscalar axionlike particles from light shining through a wall
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DOI：
10.1103/physrevd.92.092002
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发表时间：
2015-11-02
影响因子：
5
通讯作者：
Zicha, J.
中科院分区：
文献类型：
--
作者：
Ballou, R.;Deferne, G.;Zicha, J.
超越标准模型的物理学预言了新粒子的可能存在，这些新粒子可以在亚电子伏特范围内的低能前沿进行搜索。OSQAR光子再生实验从可见光子的量子振荡中寻找“穿过墙壁的光”进入“弱相互作用的subeV粒子”，例如在2 x 14.3 m长度的9 T横向磁场中的轴子或类轴子粒子（ALP）。在2014年，该实验以出色的灵敏度运行，使用18.5 W连续波激光器在532 nm的单一波长下发射绿色。在墙后没有检测到再生光子，将轴子和ALP的存在极限推到了这种实验室实验的前所未有的水平。在95%的置信水平下，赝标和标量ALP的双光子耦合可以被限制在接近无质量的极限，分别小于3.5 × 10（-8）GeV-1和3.2 × 10（-8）GeV-1。
Physics beyond the Standard Model predicts the possible existence of new particles that can be searched at the low-energy frontier in the sub-eV range. The OSQAR photon regeneration experiment looks for "light shining through a wall" from the quantum oscillation of optical photons into "weakly interacting subeV particles," such as axion or axionlike particles (ALPs) in a 9 T transverse magnetic field over a length of 2 x 14.3 m. In 2014, this experiment was run with an outstanding sensitivity, using an 18.5 W continuous wave laser emitting in the green at the single wavelength of 532 nm. No regenerated photons have been detected after the wall, pushing the limits for the existence of axions and ALPs down to an unprecedented level for such type of laboratory experiment. The diphoton couplings of possible pseudoscalar and scalar ALPs can be constrained in the nearly massless limit to be less than 3.5 x 10(-8) GeV-1 and 3.2 x 10(-8) GeV-1, respectively, at 95% confidence level.