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Scanning of the \(ee\rightarrow \pi\pi\) cross-section below 1 GeV by radiative events with untagged photon

  • V.A. Khoze
  • M.I. Konchatnij
  • N.P. Merenkov
  • G. Pancheri
  • L. Trentadue
  • O.N. Shekhovtzova
Theoretical Physics

Abstract.

We discuss an inclusive approach to the measurement of the \(e^+e^-\rightarrow \pi^+\pi^-\) cross-section by the radiative return method without photon tagging. The essential part of this approach is the choice of rules for event selection which provide rejection of events with 3 (or more) pions and decrease the final-state radiation background. The radiative corrections to the initial-state radiation process are computed for DA\(\Phi\)NE conditions, using the quasi-real electron approximation for both, the cross-section and the underlying kinematics. The two cases of restricted and unrestricted pion phase space are considered. Some numerical calculations illustrate our analytical results.

Keywords

Phase Space Numerical Calculation Radiative Event Event Selection Radiative Correction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2002

Authors and Affiliations

  • V.A. Khoze
    • 1
  • M.I. Konchatnij
    • 2
  • N.P. Merenkov
    • 2
  • G. Pancheri
    • 3
  • L. Trentadue
    • 4
  • O.N. Shekhovtzova
    • 4
  1. 1.Department of Physics and Institute for Particle Physics Phenomenology, University of Durham, DH1 3LE, UK GB
  2. 2. National Science Centre Kharkov Institute of Physics and Technology, 61108 Akademicheskaya 1, Kharkov, Ukraine UA
  3. 3. INFN Laboratori Nazionali di Frascati, P.O. Box 13, 00044 Frascati, Italy IT
  4. 4. Dipartimento di Fisica, Universita' di Parma and INFN, Gruppo Collegato di Parma, 43100 Parma, Italy IT

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