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Isospin resolved double pion production in the reaction p + d → 3He + 2 π

  • M. Andersson*
  • , Chr Bargholtz
  • , H. Calén
  • , K. Fransson
  • , K. Fransson
  • , E. Fumero
  • , L. Holmberg
  • , J. Johanson
  • , T. Johansson
  • , K. Lindh
  • , L. Mårtensson
  • , I. Sitnikova
  • , A. Sukhanov
  • , P. E. Tegnér
  • , P. Thörngren Engblom
  • , G. Weiss
  • , K. Wilhelmsen Rolander
  • , J. Zlomańczuk
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Neutral and charged two-pion production in p + d → 3He + 2π reactions has been studied at CELSIUS at a proton beam energy of 477 MeV. The total cross section for double pion production is 0.22 ± 0.03 μb. The ratio of the cross sections for the production of charged pion pairs with isospin T = 1 and T = 0 was determined to be σ(π+ π-;T = 1)/σ(π+ π-;T = 0) = 1.4 ± 0.4. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)327-333
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume485
Issue number4
DOIs
StatePublished - 20 Jul 2000
Externally publishedYes

Bibliographical note

Funding Information:
The authors are greatly indebted to the CELSIUS group for providing excellent experimental conditions for this experiment. We wish to thank Davor Protic and the personnel at the detector laboratory in Jülich for manufacturing the germanium detectors. The WASA/PROMICE collaboration is gratefully acknowledged for putting experimental equipment at our disposal. This work was supported in part by the Swedish Natural Science Research Council.

Keywords

  • Cross sections
  • Double pion production
  • Resolved isospin states

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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