A search for possible long range spin dependent interactions of the neutron from exotic vector boson exchange

C. Haddock, J. Amadio, E. Anderson, L. Barrón-Palos, B. Crawford, C. Crawford, D. Esposito, W. Fox, I. Francis, J. Fry, H. Gardiner, A. Holley, K. Korsak, J. Lieffers, S. Magers, M. Maldonado-Velázquez, D. Mayorov, J. S. Nico, T. Okudaira, C. PaudelS. Santra, M. Sarsour, H. M. Shimizu, W. M. Snow, A. Sprow, K. Steffen, H. E. Swanson, F. Tovesson, J. Vanderwerp, P. A. Yergeau

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We present a search for possible spin dependent interactions of the neutron with matter through exchange of spin 1 bosons with axial vector couplings as envisioned in possible extensions of the Standard Model. This was sought using a slow neutron polarimeter that passed transversely polarized slow neutrons by unpolarized slabs of material arranged so that interactions would tilt the plane of polarization and develop a component along the neutron momentum. The result for the rotation angle, ϕ=[2.8±4.6(stat.)±4.0(sys.)]×10−5 rad/m is consistent with zero. This result improves the upper bounds on the neutron-matter coupling gA 2 by about three orders of magnitude for force ranges in the mm– μm regime.

Original languageEnglish
Pages (from-to)227-233
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume783
DOIs
StatePublished - Aug 10 2018

Bibliographical note

Publisher Copyright:
© 2018 The Authors

Keywords

  • Fundamental symmetries
  • NSR
  • Neutron
  • WISP

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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