Physics Letters B (Sep 2020)

Beam-normal single spin asymmetry in elastic electron scattering off 28Si and 90Zr

  • A. Esser,
  • M. Thiel,
  • P. Achenbach,
  • K. Aulenbacher,
  • S. Aulenbacher,
  • S. Baunack,
  • D. Bosnar,
  • S. Caiazza,
  • M. Christmann,
  • M. Dehn,
  • M.O. Distler,
  • L. Doria,
  • P. Eckert,
  • M. Gorchtein,
  • P. Gülker,
  • P. Herrmann,
  • M. Hoek,
  • S. Kegel,
  • P. Klag,
  • H.-J. Kreidel,
  • M. Littich,
  • S. Lunkenheimer,
  • F.E. Maas,
  • M. Makek,
  • H. Merkel,
  • M. Mihovilovič,
  • J. Müller,
  • U. Müller,
  • J. Pochodzalla,
  • B.S. Schlimme,
  • R. Spreckels,
  • V. Tioukine,
  • C. Sfienti

Journal volume & issue
Vol. 808
p. 135664

Abstract

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We report on a new measurement of the beam-normal single spin asymmetry An in the elastic scattering of 570 MeV transversely polarized electrons off 28Si and 90Zr at Q2=0.04 GeV2/c2. The studied kinematics allow for a comprehensive comparison with former results on 12C. No significant mass dependence of the beam-normal single spin asymmetry is observed in the mass regime from 12C to 90Zr.

Keywords