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- Title
Bounds on gravitational parity violation using a rotating torsion pendulum with chiral masses.
- Authors
Dorta-Urra, Anaís; Bargueño, Pedro
- Abstract
In this letter we employ recent results on gravitationally induced parity violation with a rotating torsion pendulum whose test bodies are quartz enantiomers (Zhu et al. in Phys Rev Lett 121:261101, 2018) in order to estimate, using a simple model, Hari Dass's α 2 constant which parametrizes the strength of parity violation in the gravitational interaction. The result here obtained, α 2 ∼ 10 17 , is in agreement with estimations based on high resolution experiments performed using chiral molecules, showing that the Hari-Dass's framework for spin-dependent gravity, together with our simple model, are versatile enough in order to be applied to the analysis of other experimental results involving spin-dependent gravitational effects. Interestingly, it can also be used to constrain indirectly parity-violating effects in macroscopic samples of quartz crystals due to electron–nucleon interactions.
- Subjects
GRAVITATIONAL interactions; GRAVITATIONAL effects; TORSION pendulums; PENDULUMS; QUARTZ crystals; CHIRALITY of nuclear particles
- Publication
European Physical Journal C -- Particles & Fields, 2021, Vol 81, Issue 7, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-021-09392-2