On sequential single-pion production in double-pionic fusion

M. Bashkanov; H. Clement

doi:10.1016/j.nuclphysa.2023.122698

On sequential single-pion production in double-pionic fusion

M. Bashkanov, H. Clement^*

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

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 language	English
Article number	122698
Number of pages	10
Journal	Nuclear Physics A
Volume	1037
Early online date	12 Jun 2023
DOIs	https://doi.org/10.1016/j.nuclphysa.2023.122698
Publication status	Published - 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

Keywords

Dibaryon resonance
Double-pionic fusion
Single-pion production

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On sequential single-pion production in double-pionic fusion
© 2023 The Authors
Final published version, 567 KBLicence: CC BY-NC-ND

Cite this

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abstract = "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.",

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AU - Clement, H.

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N2 - 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.

AB - 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.

KW - Dibaryon resonance

KW - Double-pionic fusion

KW - Single-pion production

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On sequential single-pion production in double-pionic fusion

Abstract

Bibliographical note

Keywords

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