| Autor: |
Bediaga, Ignacio, Frederico, Tobias, Magalhaes, Patricia C |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Physics Letters B785 (2018) 581-584 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1016/j.physletb.2018.09.021 |
| Popis: |
Following the experimental results from LHCb on the rare decay $B^+_c \to K^-K^+\pi^+$, we investigate the possibility where this process is dominated by a double charm rescattering. The $B_c$ decay to double charm channels have a weak topology that is favoured in comparison with the direct production of $K^-K^+\pi^+$ in the final state, suppressed by quark annihilation. The decay amplitude for $B^+_c \to K^-K^+\pi^+$ with $B_c$ decaying first to double charm channels is described by a charm penguin diagram, represented by charm hadronic triangle loops, which reach the final state of interest after $D\bar{D}\to K\bar{K}$ or $ D^+ D^-_s \to \pi^+ K^-$ transitions. We show that these processes give rise to non-resonant amplitudes with a clear signature in the Dalitz plot. In a near future, the new data from LHCb run II will be able to confirme if the main hypotheses of this work is correct and the dominant mechanism to produce $K^+K^+\pi^-$ from the decay of $B^+_c$ is through charm rescattering. |
| Databáze: |
arXiv |
| Externí odkaz: |
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