Lu P.-C. et al.MIN-ZU WANGChistov, R.R.ChistovChang, P.P.ChangAdachi, I.I.AdachiAhn, J.K.J.K.AhnAihara, H.H.AiharaAl Said, S.S.Al SaidAsner, D.M.D.M.AsnerAtmacan, H.H.AtmacanAulchenko, V.V.AulchenkoPAO-TI CHANGWEI-SHU HOU2021-07-282021-07-28201924700010https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062606141&doi=10.1103%2fPhysRevD.99.032003&partnerID=40&md5=27ad3e79b1fb9903da3bb85b6a439816https://scholars.lib.ntu.edu.tw/handle/123456789/574681We report the study of B+→pΛ?K+K- and B+→p?ΛK+K+ decays using a 772×106 BB? pair data sample recorded on the ? (4S) resonance with the Belle detector at KEKB. The following branching fractions are measured: B(B+→pΛ?K+K-)=(4.10-0.43+0.45±0.50)×10-6, B(B+→p?ΛK+K+)=(3.70-0.37+0.39±0.44)×10-6, B(ηc→pΛ?K-+c.c.)=(2.83-0.34+0.36±0.35)×10-3 and B(B+→pΛ?φ)=(7.95±2.09±0.77)×10-7, where c.c. denotes the corresponding charge-conjugation process. The intermediate resonance decays are excluded in the four-body decay measurements. We also find evidence for B(ηc→Λ(1520)Λ?+c.c.)=(3.48±1.48±0.46)×10-3 and B(B+→Λ(1520)Λ?K+)=(2.23±0.63±0.25)×10-6. No significant signals are found for J/ψ→Λ(1520)Λ?+c.c. and B+→Λ?(1520)ΛK+; we set the 90% confidence level upper limits on their decay branching fractions as <1.80×10-3 and <2.08×10-6, respectively. ? 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.journal article10.1103/PhysRevD.99.0320032-s2.0-85062606141