2024/11/04 by Liu, Shi-Dong, Wang, Xiao-Yun, Liu, Xiao-Hai +1
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2411.01910
We used an effective Lagrangian approach to investigate the production of the anticharmed pentaquark state P_cs(*)- with the minimal quark content csudd in the Λb0 decay and its decay into the ΛD(∗)- and ΣD(∗)-. In our calculation, the P_cs(*)- is considered as the molecule state of the nDs0(s1)- in an S wave, and its production and decay occur via triangle loops at the hadron level. The predicted branching fractions for the processes Λb0→ P_cs(*)- D+ are around 10-4∼ 10-3. The partial decay widths of the P_cs(*)- → ΛD(∗)- are between 0.1 and ∼ 10~MeV, whereas the decay widths of the P_cs(*)- → ΣD(∗)- are about one order of magnitude smaller. It is found that the width ratios for the P_cs(*)- decays are nearly independent of the model parameter α. It is hoped that these predictions could be helpful in searching for the anticharmed-strange pentaquark candidates in future LHCb experiments.