Abstract
In recent years, several deviations from the Standard Model predictions in semileptonic decays of B-meson might suggest the existence of new physics which would break the lepton-flavour universality. In this work, we have explored the possibility of using muon sneutrinos and right-handed sbottoms to solve these B-physics anomalies simultaneously in R-parity violating minimal supersymmetric standard model. We find that the photonic penguin induced by exchanging sneutrino can provide sizable lepton flavour universal contribution due to the existence of logarithmic enhancement for the first time. This prompts us to use the two-parameter scenario (C^mathrm{V}_9, , C^mathrm{U}_9) to explain b rightarrow s ell ^+ ell ^- anomaly. Finally, the numerical analyses show that the muon sneutrinos and right-handed sbottoms can explain b rightarrow s ell ^+ ell ^- and R(D^{(*)}) anomalies simultaneously, and satisfy the constraints of other related processes, such as B rightarrow K^{(*)} nu bar{nu } decays, B_s-bar{B}_s mixing, Z decays, as well as D^0 rightarrow mu ^+ mu ^-, tau rightarrow mu rho ^0, B rightarrow tau nu , D_s rightarrow tau nu , tau rightarrow K nu , tau rightarrow mu gamma , and tau rightarrow mu mu mu decays.
Highlights
Several flavour anomalies in semileptonic Bdecays have been reported, which have been attracting great interest
The upper limit of B → K (∗)ννdecay corresponds to R2ν3ν < 2.7 [71,72,73] at 90% confidence level (CL), and the upper limit of B → π ννdecay is related to R1ν3ν < 830.5 [74,75] at 90% CL
The current experimental upper limit on the branching fraction for this process is B(τ → μρ0) < 1.2 × 10−8 at 90% CL [77]
Summary
Several flavour anomalies in semileptonic Bdecays have been reported, which have been attracting great interest. Working in the mass eigenstates for the down type quarks and assuming sfermions are in their mass eigenstates, one replaces uL j by (V †uL ) j in Eq (13) These R-parity violating interactions can induce b → s + − processes by exchanging left-handed up squarks u L j at tree level, but resulting in the operators with right-handed quark current, which are unable to explain the b → s + −. We will discuss the possibility of using muon sneutrinos νμ and right-handed sbottoms bR to explain b → s + − anomaly, for which we set the mass of tau sneutrinos ντ and three left-handed up type squarks u L j sufficiently large that the contributions of the loop diagrams containing them are ignored..
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