Abstract
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 SmCo_{5} 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 5cm-1km.
Highlights
In this Letter, we report new experimental studies on the spin-spin-velocity-dependent forces (SSVDFs) by using ISSCs and a spin exchange relaxation free (SERF) comagnetometer
Similar to the SERF, the ISSCs as well as the servo motor were both shielded by four layers of μ metal to further reduce possible magnetic field leakage from the ISSCs and servo motor
Expected signals SsimðtÞ sensed by the SERF could be simulated by solving the equation sets (5) and (6) with the experimental parameters and a tentative coupling constant fs1i6m in V16 as inputs
Summary
New Experimental Limits on Exotic Spin-Spin-Velocity-Dependent Interactions by Using SmCo5 Spin Sources 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.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
