Electron beam single-spin asymmetries in the resonance region with final hadrons observed

Brandon Buncher and Carl E. Carlson
Phys. Rev. D 93, 074032 – Published 25 April 2016

Abstract

We study beam-transverse and normal single-spin asymmetry for electron-proton inelastic scattering in the resonance region for the case where a pion is observed in the final state. There is no beam single-spin asymmetry if the observed particle has single-photon exchange as its only interaction, but this is naturally circumvented when one observes a strongly interacting final state particle. The asymmetries are not large as there is an electron mass divided by momentum transfer suppression. We present results for the cases where the final electron and a pion are both observed, with asymmetries of order tens of ppm, and where only a final pion is observed, with asymmetries of order 1 ppm.

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  • Received 1 February 2016

DOI:https://doi.org/10.1103/PhysRevD.93.074032

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Brandon Buncher and Carl E. Carlson

  • Department of Physics, College of William and Mary, Williamsburg, Virginia 23187, USA

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Issue

Vol. 93, Iss. 7 — 1 April 2016

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