2018/01/03 by Bin Wei, Jie Zhu, Wei, Bin +8
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.1801.00917
21 pages, 5 figures
arxiv created 2018/01/03 · openalex publication_date 2018/01/03 · arxiv updated 2018/01/04 · openalex created_date 2018/01/12 · openalex updated_date 2026/07/28
Motivated by recent RD, RD^* and RJ/ψ anomalies in B→ Dℓ- νℓ, B→ D^*ℓ- νℓ and Bc→ J/ψℓ- νℓ decays, respectively, we study possible R-parity violating supersymmetric effects in Bc→ J/ψℓ- νℓ,ηcℓ- νℓ and Λb → Λc ℓ- νℓ decays, which are also induced by b→ c ℓ- νℓ at quark level. We find that (I) the constrained slepton exchange couplings λi33λ'^*i23 involving in b→ c τ- ντ transition from relevant latest experimental data still have quite large effects on all (differential) branching ratios and the normalized forward-backward asymmetries of the exclusive semileptonic b→ c τ- ντ decays as well as the ratios of the (differential) branching ratios; (II) after satisfying the data of RD and RD^*, the upper limit of RJ/ψ, Rηc and RΛc could be increased by 10%, 112% and 24%, respectively, from their upper limits of the Standard Model predictions by the λi33λ'^*i23 couplings. The results in this work could be used to probe R-parity violating effects and will correlate with searches for direct supersymmetric signals at the running LHCb and the forthcoming Belle-II.