A Search for deviations from the inverse square law of gravity at nm range using a pulsed neutron beam

We describe an experimental search for deviations from the inverse square law of gravity at the nanometer length scale using neutron scattering from noble gases on a pulsed slow neutron beamline. By measuring the neutron momentum transfer (\(q\)) dependence of the differential cross section for xeno...

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Bibliographic Details
Published in:arXiv.org 2018-02
Main Authors: Haddock, Christopher C, Oi, Noriko, Hirota, Katsuya, Ino, Takashi, Kitaguchi, Masaaki, Matsumoto, Satoru, Mishima, Kenji, Shima, Tatsushi, Shimizu, Hirohiko M, Snow, W Michael, Yoshioka, Tamaki
Format: Article
Language:English
Subjects:
Data analysis
Dependence
Gravitation
Helium
Momentum transfer
Neutron beams
Neutron scattering
Neutrons
Rare gases
Sensitivity analysis
Thermal neutrons
Upper bounds
Xenon
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Summary:We describe an experimental search for deviations from the inverse square law of gravity at the nanometer length scale using neutron scattering from noble gases on a pulsed slow neutron beamline. By measuring the neutron momentum transfer (\(q\)) dependence of the differential cross section for xenon and helium and comparing to their well-known analytical forms, we place an upper bound on the strength of a new interaction as a function of interaction length \(\lambda\) which improves upon previous results in the region \(\lambda < 0.1\,\)nm, and remains competitive in the larger \(\lambda\) region. A pseudoexperimental simulation developed for this experiment and its role in the data analysis described. We conclude with plans for improving sensitivity in the larger \(\lambda\) region.
ISSN:2331-8422
DOI:10.48550/arxiv.1712.02984