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π d → γnn and the Effective Range Theory Parameters ann and rnn

  • J.-C. Alder
  • W. Dahme
  • H. v. Fellenberg
  • B. Gabioud
  • C. Joseph
  • J.-F. Loude
  • N. Morel
  • H. Panke
  • A. Perrenoud
  • J.-P. Perroud
  • D. Renker
  • G. Strassner
  • M. T. Tran
  • P. Truöl
  • E. Winkelmann
  • C. Zupancic
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 87)

Abstract

Among all reactions used to determine ann, π d → γnn and μ d → υnn are unique to study the two neutrons final state interactions since no other strong interacting particle is present. This fact makes the theoretical calculations necessary to extract ann more reliable. The “complete” experiment of R.M. Salter, R.P. Haddock et al.1) yielded a value of −16.7 ± 1.3 fm. To this uncertainty mainly coming from the detection of the two neutrons must be added the theoretical uncertainty of the Bander’s theory2) (1 fm) used to extract ann. Two recent calculations3,4) give lower uncertainties of about 0.3 fm if the neutron-neutron relative momentum is restricted to about a few tens of MeV/c.

Keywords

Theoretical Uncertainty Theoretical Spectrum Final State Interaction Splitted Data Charge Exchange Reaction 
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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References

  1. 1).
    R.M. Salter et al., Nucl. Phys. A 254 (1975) 241.ADSCrossRefGoogle Scholar
  2. 2).
    M. Bander, Phys. Rev. 134 (1964) B 1052.ADSCrossRefGoogle Scholar
  3. 3).
    W.R. Gibbs, B.F. Gibson, G.J. Stephenson, Phys. Rev. C11 (1975) 90.ADSGoogle Scholar
  4. 4).
    G.F. de Teramond, Phys. Rev. C16 (1977) 1976.ADSGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1978

Authors and Affiliations

  • J.-C. Alder
    • 1
  • W. Dahme
    • 2
  • H. v. Fellenberg
    • 3
  • B. Gabioud
    • 1
  • C. Joseph
    • 1
  • J.-F. Loude
    • 1
  • N. Morel
    • 1
  • H. Panke
    • 2
  • A. Perrenoud
    • 1
  • J.-P. Perroud
    • 1
  • D. Renker
    • 2
  • G. Strassner
    • 3
  • M. T. Tran
    • 1
  • P. Truöl
    • 3
  • E. Winkelmann
    • 1
  • C. Zupancic
    • 2
  1. 1.Institut de physique nucléaireUniversité de Lausanne, DorignyLausanneSwitzerland
  2. 2.Sektion PhysikUniversität MuenchenGarchingGermany
  3. 3.Physik InstitutUniversität ZürichZürichSwitzerland

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