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Cabibbo-Suppressed Non-leptonic Decays of Ac and Final State Interaction |
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| Authors: | CHEN Shao-long GUO Xin-Heng LI Xue-Qian WANG Guo-Li |
| Institution: | Department of Physics, Nankai University, Tianjin 300071, China;CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China Department of Physics and Mathematical Physics, and Special Research Center for the Subatomic Structure of Matter,Adelaide University, SA 5005, Australia Department of Physics, Nankai University, Tianjin 300071, China;CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China;Institute of Theoretical Physics, Academia Sinica, Beijing 100080, China Department of Physics, Nankai University, Tianjin 300071, China;CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China;Institute of Theoretical Physics, Academia Sinica, Beijing 100080, China |
| Abstract: | With the diquark structure of Ac, we investigate the branching ratio of Ac → nr+ and pro. The results show that without considering the final state interaction (FSI), the branching ratio of Ac → pπ0 is only of order 10-6 whereas this ratio could reach 10-4 and is at the same order as Ac → nr+ if taking into account the FSI effects. Concrete values depend on phenomenological parameters adopted in the calculations. These branching ratios can be measured in the experiments to come. |
| Keywords: | heavy quark effective theory diquark structure Cabibbo-suppressed non-leptonic decay |
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