The $$D_s^+ \rightarrow a_0(980) e^+ \nu _e$$ D s + → a 0 ( 980 ) e + ν e reaction and the $$a_0(980)-f_0(980)$$ a 0 ( 980 ) - f 0 ( 980 ) mixing
Abstract We perform a study of the $$D_s^+ \rightarrow a_0(980)(f_0(980)) e^+ \nu _e$$ D s + → a 0 ( 980 ) ( f 0 ( 980 ) ) e + ν e reactions investigating the different sources of isospin violation which make the production of the $$a_0(980)$$ a 0 ( 980 ) possible. We find that loops involving kaons...
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2021
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oai:doaj.org-article:a746449fbb2c4d22993756276603a3352021-11-21T12:09:52ZThe $$D_s^+ \rightarrow a_0(980) e^+ \nu _e$$ D s + → a 0 ( 980 ) e + ν e reaction and the $$a_0(980)-f_0(980)$$ a 0 ( 980 ) - f 0 ( 980 ) mixing10.1140/epjc/s10052-021-09820-31434-60441434-6052https://doaj.org/article/a746449fbb2c4d22993756276603a3352021-11-01T00:00:00Zhttps://doi.org/10.1140/epjc/s10052-021-09820-3https://doaj.org/toc/1434-6044https://doaj.org/toc/1434-6052Abstract We perform a study of the $$D_s^+ \rightarrow a_0(980)(f_0(980)) e^+ \nu _e$$ D s + → a 0 ( 980 ) ( f 0 ( 980 ) ) e + ν e reactions investigating the different sources of isospin violation which make the production of the $$a_0(980)$$ a 0 ( 980 ) possible. We find that loops involving kaons in the production mechanism provide a source of isospin violation since they do not cancel due to the different mass of charged and neutral kaons, but we also find that the main source comes from the breaking of isospin in the meson-meson transition T matrices, which contain information on the nature of the low lying scalar mesons. The reaction is thus very sensitive to the nature of the $$a_0(980)$$ a 0 ( 980 ) and $$f_0(980)$$ f 0 ( 980 ) resonances. Our results are consistent with the present upper bound for $$a_0(980)$$ a 0 ( 980 ) production and only a factor three smaller, indicating that future runs with more statistics should find actual numbers for this reaction from where we can learn more about the origin of the scalar resonances and their nature.Jia-Xin LinJia-Ting LiSheng-Juan JiangWei-Hong LiangE. OsetSpringerOpenarticleAstrophysicsQB460-466Nuclear and particle physics. Atomic energy. RadioactivityQC770-798ENEuropean Physical Journal C: Particles and Fields, Vol 81, Iss 11, Pp 1-8 (2021) |
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DOAJ |
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DOAJ |
| language |
EN |
| topic |
Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 |
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Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Jia-Xin Lin Jia-Ting Li Sheng-Juan Jiang Wei-Hong Liang E. Oset The $$D_s^+ \rightarrow a_0(980) e^+ \nu _e$$ D s + → a 0 ( 980 ) e + ν e reaction and the $$a_0(980)-f_0(980)$$ a 0 ( 980 ) - f 0 ( 980 ) mixing |
| description |
Abstract We perform a study of the $$D_s^+ \rightarrow a_0(980)(f_0(980)) e^+ \nu _e$$ D s + → a 0 ( 980 ) ( f 0 ( 980 ) ) e + ν e reactions investigating the different sources of isospin violation which make the production of the $$a_0(980)$$ a 0 ( 980 ) possible. We find that loops involving kaons in the production mechanism provide a source of isospin violation since they do not cancel due to the different mass of charged and neutral kaons, but we also find that the main source comes from the breaking of isospin in the meson-meson transition T matrices, which contain information on the nature of the low lying scalar mesons. The reaction is thus very sensitive to the nature of the $$a_0(980)$$ a 0 ( 980 ) and $$f_0(980)$$ f 0 ( 980 ) resonances. Our results are consistent with the present upper bound for $$a_0(980)$$ a 0 ( 980 ) production and only a factor three smaller, indicating that future runs with more statistics should find actual numbers for this reaction from where we can learn more about the origin of the scalar resonances and their nature. |
| format |
article |
| author |
Jia-Xin Lin Jia-Ting Li Sheng-Juan Jiang Wei-Hong Liang E. Oset |
| author_facet |
Jia-Xin Lin Jia-Ting Li Sheng-Juan Jiang Wei-Hong Liang E. Oset |
| author_sort |
Jia-Xin Lin |
| title |
The $$D_s^+ \rightarrow a_0(980) e^+ \nu _e$$ D s + → a 0 ( 980 ) e + ν e reaction and the $$a_0(980)-f_0(980)$$ a 0 ( 980 ) - f 0 ( 980 ) mixing |
| title_short |
The $$D_s^+ \rightarrow a_0(980) e^+ \nu _e$$ D s + → a 0 ( 980 ) e + ν e reaction and the $$a_0(980)-f_0(980)$$ a 0 ( 980 ) - f 0 ( 980 ) mixing |
| title_full |
The $$D_s^+ \rightarrow a_0(980) e^+ \nu _e$$ D s + → a 0 ( 980 ) e + ν e reaction and the $$a_0(980)-f_0(980)$$ a 0 ( 980 ) - f 0 ( 980 ) mixing |
| title_fullStr |
The $$D_s^+ \rightarrow a_0(980) e^+ \nu _e$$ D s + → a 0 ( 980 ) e + ν e reaction and the $$a_0(980)-f_0(980)$$ a 0 ( 980 ) - f 0 ( 980 ) mixing |
| title_full_unstemmed |
The $$D_s^+ \rightarrow a_0(980) e^+ \nu _e$$ D s + → a 0 ( 980 ) e + ν e reaction and the $$a_0(980)-f_0(980)$$ a 0 ( 980 ) - f 0 ( 980 ) mixing |
| title_sort |
$$d_s^+ \rightarrow a_0(980) e^+ \nu _e$$ d s + → a 0 ( 980 ) e + ν e reaction and the $$a_0(980)-f_0(980)$$ a 0 ( 980 ) - f 0 ( 980 ) mixing |
| publisher |
SpringerOpen |
| publishDate |
2021 |
| url |
https://doaj.org/article/a746449fbb2c4d22993756276603a335 |
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