Proton-antiproton annihilation and meson spectroscopy with the Crystal Barrel

@article{Amsler1998ProtonantiprotonAA,
  title={Proton-antiproton annihilation and meson spectroscopy with the Crystal Barrel},
  author={Claude Amsler},
  journal={Reviews of Modern Physics},
  year={1998},
  volume={70},
  pages={1293-1339}
}
  • C. Amsler
  • Published 18 August 1997
  • Physics
  • Reviews of Modern Physics
This report reviews the achievements of the Crystal Barrel experiment at the Low Energy Antiproton Ring (LEAR) at CERN. During seven years of operation Crystal Barrel has collected very large statistical samples in pbarp annihilation, especially at rest and with emphasis on final states with high neutral multiplicity. The measured rates for annihilation into various two-body channels and for electromagnetic processes have been used to test simple models for the annihilation mechanism based on… 

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References

SHOWING 1-10 OF 225 REFERENCES

Is f0(1500) a scalar glueball?

  • AmslerClose
  • Physics
    Physical review. D, Particles and fields
  • 1996
TLDR
It is shown that f0(1500) is compatible with the ground state glueball expected around 1500 MeV mixed with the nearby states of the 0 ++ Q ¯ state.

Particle Data Group)

  • Phys. Rev. D
  • 1996

Observation of f0(1500) decay into KLKL

S- and P-state annihilation in overlinepp interactions at rest

1995e, High statistics study

  • 1995

1994b, Observation of a new

  • 1994

1994e, in Hadron ’93

  • Proceedings of the Hadron 93 Conf.,
  • 1994

1995b, First observation of the production of nucleon resonances

  • 1995

Low Energy Antiproton Physics

CONTENTS I . INTRODUCTION ... .• ..•.•. ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 19 2. ANTINUCLEON-NUCLEON SCATTERING.. ........ .... .

Observation of a scalar resonance decaying to π+π−π0π0 in pp annihilation at rest

...