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Spin asymmetry in γe ↑→e+2 jets: A laboratory for final state interactions

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Zeitschrift für Physik C Particles and Fields

Abstract

We isolate final state interactions not parametrized by fragmentation functions and yet present in QCDO(α s ) corrections to two-jet production in photon-longitudinally polarized electron scattering. Our calculation focuses on dynamical imaginary (absorptive) corrections that are absent in any tree diagrams. We explicitly demonstrate cancellation of imaginary infinities in the sum over graphs. The resulting asymmetry is predicted to be small. Such a quantity should be soon measured in experiments exploiting the naturally large electron polarization occurring in standard high energy storage rings.

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Authors and Affiliations

  1. Département de Physique Mathématique, USTL, F-34060, Montpellier Cedex, France

    Jacques Layssac

  2. CERN, CH-1211, Geneva 23, Switzerland

    Bernard Pire

  3. Argonne National Laboratory, HEP Division, 60439, Argonne, IL, USA

    John P. Ralston

Authors
  1. Jacques Layssac
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  2. Bernard Pire
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  3. John P. Ralston
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Layssac, J., Pire, B. & Ralston, J.P. Spin asymmetry in γe ↑→e+2 jets: A laboratory for final state interactions. Z. Phys. C - Particles and Fields 25, 49–54 (1984). https://doi.org/10.1007/BF01571956

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  • DOI: https://doi.org/10.1007/BF01571956

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