2018/03/31 by Wei Ji, Yao Chen, Changbo Fu +5
Engineering · Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Electromagnetic shielding #Magnetic Field Sensors Techniques #Magnetic field #Magnetometer #Nuclear magnetic resonance #Physics #Quantum mechanics #Relaxation (psychology) #Sensitivity (control systems) #Spin (aerodynamics) #Thermodynamics #hep-ex
paper · pdf · doi:10.1103/physrevlett.121.261803
published as Phys. Rev. Lett. 121, 261803 (2018) · 5 pages, 4 figures
arxiv created 2018/04/03 · openalex created_date 2018/04/13 · openalex publication_date 2018/12/28 · arxiv updated 2019/01/02 · openalex updated_date 2026/08/05
Despite the great success of the standard model (SM), there still exist mysteries like the nature of dark matter, the strong CP problems, etc. To solve them, many theories proposed new bosons beyond the SM that can mediate new forces. Here, we report the latest results of searching for possible new long-range spin-spin-velocity-dependent forces (SSVDFs), based on specially designed iron-shielded SmCo5 spin sources and a spin exchange relaxation free comagnetometer. With help from the similarity analysis method, new constraints on some forms of SSVDFs between electrons have been obtained, which represent up to more than 11 orders of magnitude tighter limits than previous experiments for the force range of 5 cm-1 km.