ABC Effect and Resonance Structure in the Double-Pionic Fusion to 3He
Historically the double-pionic fusion to 3He is the reaction, where the ABC effect (low-mass enhancement of the ππ-invariant mass spectrum) was observed for the first time more than 50 years ago. Meanwhile exclusive and kinematically complete high-statistics measurements with WASA at COSY revealed a...
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2012-12-01
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Series: | EPJ Web of Conferences |
Online Access: | http://dx.doi.org/10.1051/epjconf/20123709029 |
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doaj-dbae185b84ea416c872b4ea3e1c72e712021-08-02T01:31:36ZengEDP SciencesEPJ Web of Conferences2100-014X2012-12-01370902910.1051/epjconf/20123709029ABC Effect and Resonance Structure in the Double-Pionic Fusion to 3HePricking A.Doroshkevich E.Clement H.Bashkanov M.Perez del Rio E.Skorodko T.Wagner G. J.Historically the double-pionic fusion to 3He is the reaction, where the ABC effect (low-mass enhancement of the ππ-invariant mass spectrum) was observed for the first time more than 50 years ago. Meanwhile exclusive and kinematically complete high-statistics measurements with WASA at COSY revealed a strict correlation between the ABC effect and a narrow resonance structure with I(JP) = 0(3+) in the total cross section of the most basic double-pionic fusion, the pn → dπ0π0 reaction. In order to investigate the situation in the double-pionic fusion to 3He the energy dependence of the ABC effect in the fusion to 3He has been measured by fixed energy measurements of the type pd →3Heππ as well as by quasifree and coherent measurements of the type dd →3He n ππ. http://dx.doi.org/10.1051/epjconf/20123709029 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Pricking A. Doroshkevich E. Clement H. Bashkanov M. Perez del Rio E. Skorodko T. Wagner G. J. |
spellingShingle |
Pricking A. Doroshkevich E. Clement H. Bashkanov M. Perez del Rio E. Skorodko T. Wagner G. J. ABC Effect and Resonance Structure in the Double-Pionic Fusion to 3He EPJ Web of Conferences |
author_facet |
Pricking A. Doroshkevich E. Clement H. Bashkanov M. Perez del Rio E. Skorodko T. Wagner G. J. |
author_sort |
Pricking A. |
title |
ABC Effect and Resonance Structure in the Double-Pionic Fusion to 3He |
title_short |
ABC Effect and Resonance Structure in the Double-Pionic Fusion to 3He |
title_full |
ABC Effect and Resonance Structure in the Double-Pionic Fusion to 3He |
title_fullStr |
ABC Effect and Resonance Structure in the Double-Pionic Fusion to 3He |
title_full_unstemmed |
ABC Effect and Resonance Structure in the Double-Pionic Fusion to 3He |
title_sort |
abc effect and resonance structure in the double-pionic fusion to 3he |
publisher |
EDP Sciences |
series |
EPJ Web of Conferences |
issn |
2100-014X |
publishDate |
2012-12-01 |
description |
Historically the double-pionic fusion to 3He is the reaction, where the ABC effect (low-mass enhancement of the ππ-invariant mass spectrum) was observed for the first time more than 50 years ago. Meanwhile exclusive and kinematically complete high-statistics measurements with WASA at COSY revealed a strict correlation between the ABC effect and a narrow resonance structure with I(JP) = 0(3+) in the total cross section of the most basic double-pionic fusion, the pn → dπ0π0 reaction. In order to investigate the situation in the double-pionic fusion to 3He the energy dependence of the ABC effect in the fusion to 3He has been measured by fixed energy measurements of the type pd →3Heππ as well as by quasifree and coherent measurements of the type dd →3He n ππ. |
url |
http://dx.doi.org/10.1051/epjconf/20123709029 |
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