The effects of nonlocal interactions in rare B decays, B→ Xsl+l-, are investigated. We show the correlation between the branching ratio and the forward–backward asymmetry via two coefficients of the nonlocal interactions. This will certainly help us find any deviations from the standard model through the nonlocal interactions.
Rare b decays provide a unique opportunity to measure Standard Model parameters and probe beyond the Standard Model. We review here the experimental progress made in measuring these decays, and the importance of future measurements, including the possible observation of CP violation.
Rare B-decays induced by flavour-changing neutral currents (FCNC) is one of the promising candidates for probing physics beyond the Standard model. However, for identifying potential new physics from the data, reliable control over QCD contributions is necessary. We focus on one of such QCD contributions – the charming loops – that potentially can lead to difficulties in disentangling new physics effects from the observable and discuss the possibility to gain control over theoretical predictions for charming loops.
Rare B decays in the Standard Model