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Test of the Equivalence Principle with Chiral Masses Using a Rotating Torsion Pendulum

作者: 來源: 發布時間:2020年04月02日 20:32 點擊次數:[]

Test of the Equivalence Principle with Chiral Masses Using a Rotating Torsion Pendulum

Lin Zhu, Qi Liu, Hui-Hui Zhao, Qi-Long Gong, Shan-Qing Yang, Pengshun Luo, Cheng-Gang Shao, 

Qing-Lan Wang, Liang-Cheng Tu, and Jun Luo

Here we present a new test of the equivalence principle designed to search for the possible violation of gravitational parity using test bodies with different chiralities. The test bodies are a pair of left- and right-handed quartz crystals, whose gravitational acceleration difference is measured by a rotating torsion pendulum. The result shows that the acceleration difference towards Earth Δaleft-right=[-1.7±4.1(stat) ±4.4(syst)]×10-15ms-2 (1-σ statistical uncertainty), correspondingly the E?tv?s parameter η=[-1.2±2.8(stat) ±3.0(syst)] ×10-13. This is the first reported experimental test of the equivalence principle for chiral masses and opens a new way to the search for the possible parity-violating gravitation.

期刊名:PHYSICAL REVIEW LETTERS

/卷:121

頁碼:261101

發表時間:201812

DOI: 10.1103/PhysRevLett.121.261101



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