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Observation of $\bar{p} p \to 2 \pi^0$ at Rest: Evidence Concerning $s$ State Annihilation

Authors
  • Devons, S.
  • Kozlowski, T.
  • Nemethy, P.
  • Shapiro, S.
  • Horwitz, N.
  • Kalogeropoulos, T.
  • Skelly, J.
  • Smith, R.
  • Uto, H.
Publication Date
Oct 01, 1971
Identifiers
DOI: 10.1103/PhysRevLett.27.1614
OAI: oai:inspirehep.net:68398
Source
INSPIRE-HEP
License
Unknown
External links

Abstract

We have identified the annihilation mode p¯p→2π0 for antiprotons stopping in liquid hydrogen at a rate which is 0.15 (±20%) times that reported for p¯p→π+π−. This indicates that about 40% of all annihilations into 2π take place from odd-orbital atomic p¯p states, in contrast to the usual assumption that annihilation from the s state predominates.

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