Y. Li et al. (Belle Collaboration)WEI-SHU HOU2021-07-282021-07-28201924700010https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077923956&doi=10.1103%2fPhysRevD.100.112010&partnerID=40&md5=81f377debcb2905cecc80424d261c28chttps://scholars.lib.ntu.edu.tw/handle/123456789/574702Using the data sample of 711 fb-1 of ?'(4S) on-resonance data taken by the Belle detector at the KEKB asymmetric-energy electron-positron collider, we present the first measurements of branching fractions of the decays B-→Λc-Ξc′0, B-→Λc-Ξc(2645)0, and B-→Λc-Ξc(2790)0. The signal yields for these decays are extracted from the recoil mass spectrum of the system recoiling against Λc-baryons in selected B-candidates. The branching fraction of B-→Λc-Ξc(2790)0 is measured to be (1.1±0.4±0.2)×10-3, where the first uncertainty is statistical and the second is systematic. The 90% credibility level upper limits on B(B-→Λc-Ξc′0) and B(B-→Λc-Ξc(2645)0) are determined to be 6.5×10-4 and 7.9×10-4, respectively. ? 2019 authors. Published by the American Physical Society.journal article10.1103/PhysRevD.100.1120102-s2.0-85077923956