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Protonium Spectroscopy and Identification of P-Wave And S-Wave Initial States of pp̄ Annihilations at Rest with the Asterix Experiment at Lear

  • S. Ahmad
  • C. Amsler
  • R. Armenteros
  • E. Auld
  • D. Axen
  • G. Beer
  • J. C. Bizot
  • M. Caria
  • M. Comyn
  • W. Dahme
  • B. Delcourt
  • K. Erdman
  • P. Eschtruth
  • U. Gastaldi
  • M. Heel
  • R. Howard
  • J. Jeanjean
  • H. Kalinowsky
  • F. Kayser
  • E. Klempt
  • R. Landua
  • H. Nguyen
  • L. Robertson
  • C. Sabev
  • R. Schneider
  • O. Schreiber
  • U. Straumann
  • P. Truöl
  • B. White
  • W. R. Wodrich
Part of the Ettore Majorana International Science Series book series (EMISS, volume 17)

Abstract

The ASTERIX experiment has been designed1) with three main objectives:
  1. (a)

    To study the general features of pp̄ interactions at rest: strong interaction shift and broadening of the atomic levels of the pp̄ atom, branching ratios of the pp̄ annihilation channels from S and P atomic states, spin dependence of shifts, widths and branching ratios;

     
  2. (b)

    To extend (with comparable resolution, better reconstruction of final states, about 100 times more statistics and data both with P-wave and S-wave initial states) the work done so far in the spectroscopy of light mesons produced in pp̄ annihilations at rest2);

     
  3. (c)

    To search with high sensitivity for gluonium (gg, ggg bound states), qqq̄q̄ baryonium structures and NN states bound by strong interactions. These objects are likely to be produced in pp̄ annihilations at rest besides the well-known qq̄ light mesonic structures already seen in bubble chamber experiments.

     

Keywords

Drift Time Plastic Scintillator Beam Momentum Drift Cell Annihilation Event 
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

© Plenum Press, New York 1984

Authors and Affiliations

  • S. Ahmad
    • 4
  • C. Amsler
    • 6
  • R. Armenteros
    • 1
  • E. Auld
    • 5
  • D. Axen
    • 5
  • G. Beer
    • 5
  • J. C. Bizot
    • 4
  • M. Caria
    • 6
  • M. Comyn
    • 5
  • W. Dahme
    • 3
  • B. Delcourt
    • 4
  • K. Erdman
    • 5
  • P. Eschtruth
    • 4
  • U. Gastaldi
    • 2
  • M. Heel
    • 2
  • R. Howard
    • 5
  • J. Jeanjean
    • 4
  • H. Kalinowsky
    • 2
  • F. Kayser
    • 2
  • E. Klempt
    • 2
  • R. Landua
    • 2
  • H. Nguyen
    • 4
  • L. Robertson
    • 5
  • C. Sabev
    • 1
  • R. Schneider
    • 2
  • O. Schreiber
    • 2
  • U. Straumann
    • 6
  • P. Truöl
    • 6
  • B. White
    • 5
  • W. R. Wodrich
    • 3
  1. 1.CERNSwitzerland
  2. 2.MainzGermany
  3. 3.MunichGermany
  4. 4.Orsay (LAL)France
  5. 5.Vancouver-Victoria-TRIUMFCanada
  6. 6.ZürichSwitzerland

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