Study on $$\Xi _{cc}\rightarrow \Xi _c$$ Ξcc→Ξc and $$\Xi _{cc}\rightarrow \Xi '_c$$ Ξcc→Ξc′ weak decays in the light-front quark model
Abstract In this work we study the weak decays of $$\Xi _{cc}\rightarrow \Xi _c$$ Ξcc→Ξc and $$\Xi _{cc}\rightarrow \Xi '_c$$ Ξcc→Ξc′ in the light-front quark model. Generally, a naive, but reasonable conjecture suggests that the cc subsystem in $$\Xi _{cc}$$ Ξcc ( us pair in $$\Xi ^{(')}_...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2020-02-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-020-7699-y |
| Summary: | Abstract In this work we study the weak decays of $$\Xi _{cc}\rightarrow \Xi _c$$ Ξcc→Ξc and $$\Xi _{cc}\rightarrow \Xi '_c$$ Ξcc→Ξc′ in the light-front quark model. Generally, a naive, but reasonable conjecture suggests that the cc subsystem in $$\Xi _{cc}$$ Ξcc ( us pair in $$\Xi ^{(')}_c$$ Ξc(′) ) stands as a diquark with definite spin and color assignments. During the concerned processes, the diquark of the initial state is not a spectator, namely must be broken. A Racah transformation would decompose the original (cc)q into a combination of c(cq) components. Thus we may deal with the decaying c quark alone while keeping the (cq) subsystem as a spectator. With the re-arrangement of the inner structure we calculate the form factors numerically and then obtain the rates of semi-leptonic decays and non-leptonic decays, which will be measured in the future. |
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| ISSN: | 1434-6044 1434-6052 |