Experimental search for long-range forces in neutron scattering via a gravitational spectrometer

A. P. Serebrov, P. Geltenbort, O. M. Zherebtsov, S. V. Sbitnev, V. E. Varlamov, A. V. Vassiljev, M. S. Lasakov, I. A. Krasnoschekova, S. N. Ivanov, and D. Pushin
Phys. Rev. C 89, 044002 – Published 9 April 2014

Abstract

In this work we introduce a method of measuring low-energy scattering cross section with a gravitational spectrometer. In this method we add atoms (i.e., He) to the gravitational spectrometer filled with a target gas of ultracold neutrons (UCN). We search for long-range forces between atoms and UCN by measuring transfer of a small recoil energy 107 eV using the gravitational spectrometer. As a result of this search we set new constraints on the strength of long-range forces within the range of the effective radius of interaction of 107104 cm.

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  • Received 24 June 2013
  • Revised 19 November 2013

DOI:https://doi.org/10.1103/PhysRevC.89.044002

©2014 American Physical Society

Authors & Affiliations

A. P. Serebrov1,*, P. Geltenbort2, O. M. Zherebtsov1, S. V. Sbitnev1, V. E. Varlamov1, A. V. Vassiljev1, M. S. Lasakov1, I. A. Krasnoschekova1, S. N. Ivanov2, and D. Pushin3

  • 1Petersburg Nuclear Physics Institute, 188300 Gatchina, Leningrad District, Russia
  • 2Institute Laue Langevin, BP 156, F-38042 Grenoble, France
  • 3University of Waterloo, Ontario, Canada and National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA

  • *serebrov@pnpi.spb.ru

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Vol. 89, Iss. 4 — April 2014

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