The $$Z_c(3900)$$ Zc(3900) peak does not come from the “triangle singularity”
Abstract We compare contributions from the triangle diagram and the $$D\bar{D}^*$$ DD¯∗ bubble chain with the processes of $$e^{+}e^{-}\rightarrow J/\psi \pi ^{+}\pi ^{-}$$ e+e-→J/ψπ+π- and $$e^{+}e^{-}\rightarrow (D\bar{D}^*)^\mp \pi ^{\pm }$$ e+e-→(DD¯∗)∓π± . By fitting the $$J/\psi \pi $$ J/ψπ ma...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2018-03-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-018-5690-7 |