On sequential single-pion production in double-pionic fusion

M. Bashkanov, H. Clement*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Recently a two-step process has been proposed for the double-pionic fusion to deuterium pn(I=0)→dπ+π. Its calculation is solely based on total cross section data for the two sequential single-pion production steps pn(I=0)→ppπ followed by pp→dπ+. Though this sequential process was aimed to explain the dibaryon resonance d(2380) peak in double-pionic fusion, we demonstrate that this is not the case. It rather fits to a possible broad bump at 2.31 GeV in the energy dependence of the pn→dπ0π0 reaction, which was recently interpreted as a consequence of dibaryonic excitations in isoscalar single-pion production.

Original languageEnglish
Article number122698
Number of pages10
JournalNuclear Physics A
Early online date12 Jun 2023
Publication statusPublished - 1 Sept 2023

Bibliographical note

Funding Information:
We acknowledge valuable discussions with E. Oset, A. Gal and I. Strakovsky. This work has been supported by DFG ( CL 214/3-3 ) and by the U.K. STFC ST/L00478X/2 , ST/V001035/1 .

Publisher Copyright:
© 2023 The Authors


  • Dibaryon resonance
  • Double-pionic fusion
  • Single-pion production

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