ﻻ يوجد ملخص باللغة العربية
Inspired by the recent experimental results which show deviations from the standard model (SM) predictions of $brightarrow s ell^+ell^-$ transitions, we study the $R$-parity violating minimal supersymmetric standard model (RPV-MSSM) extended by the inverse seesaw mechanisms. The trilinear $R$-parity violating terms together with the chiral mixings of sneutrinos induce the loop contributions to the $brightarrow s ell^+ell^-$ anomaly. We study the parameter space of the single-parameter scenario $C^{rm NP}_{9,mu}=-C^{rm NP}_{10,mu}=C_{rm V}$ and the double-parameter scenario $(C_{rm V},C_{rm U})$ respectively, constrained by other experimental data such as $B_s-bar{B}_s$ mixing, $Brightarrow X_s gamma$ decay, the lepton flavour violating decays, etc.. Both the single-parameter scenario and double-parameter scenario can resolve the long existed muon anomalous magnetic moment problem as well.
One of the fundamental predictions of the Standard Model is Lepton Flavour Universality. Any deviation from this prediction would indicate the existence of physics beyond the Standard Model. Recent LHCb measurements present a pattern of deviations fr
Non-vanishing boundary localised terms significantly modify the mass spectrum and various interactions among the Kaluza-Klein excited states of 5-Dimensional Universal Extra Dimensional scenario. In this scenario we compute the contributions of Kaluz
Ratios of branching fractions of semileptonic B decays, $(B to H mu mu)$ over $(B to H ee)$ with $H=K, K^*,X_s, K_0(1430), phi, ldots$ are sensitive probes of lepton universality. In the Standard Model, the underlying flavor changing neutral current
We analyze the class of models with an extra $U(1)_X$ gauge symmetry that can account for the $b to s ell ell$ anomalies by modifying the Wilson coefficients $C_{9e}$ and $C_{9mu}$ from their standard model values. At the same time, these models gene
Recently the LHCb collaboration has confirmed the evidence for lepton flavour nonuniversality at the $3.1sigma$ level via an updated measurement of $R_K$. In this work we analyse this evidence within a model-independent approach. We make projections