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

Christopher C. Haddock1, Noriko Oi1, Katsuya Hirota1, Takashi Ino2, Masaaki Kitaguchi1, Satoru Matsumoto3, Kenji Mishima2, Tatsushi Shima4, Hirohiko M. Shimizu1 et al.

W. Michael Snow5 and Tamaki Yoshioka6

  • 1Nagoya University, Furocho, Chikusa Ward, Nagoya, Aichi Prefecture 464-0814, Japan
  • 2High Energy Accelerator Research Organization KEK 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
  • 3Department of Physics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
  • 4Research Center for Nuclear Physics, Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
  • 5Department of Physics, Indiana University, 727 E. Third Street, Swain Hall West, Room 117, Bloomington, Indiana 47405-7105, USA
  • 6Research Center for Advanced Particle Physics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

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Phys. Rev. D 97, 062002 – Published 22 March, 2018

DOI: https://doi.org/10.1103/PhysRevD.97.062002

Abstract

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 beam line. 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 λ which improves upon previous results in the region λ<0.1  nm, and remains competitive in the larger-λ region. A pseudoexperimental simulation is developed for this experiment and its role in the data analysis is described. We conclude with plans for improving sensitivity in the larger-λ region.

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Synopsis

Neutron Test for Newton’s Gravity

Published 22 March, 2018

Experiments with neutrons search for violations of gravity’s inverse square law at subnanometer distances.

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Article Text

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Phys. Rev. D 97, 062002– Published 22 March, 2018
  • Received 9 December 2017
Article part of CHORUS
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