Latest results on rare decays from LHCb

Abstract

Rare flavour changing neutral current decays are sensitive indirect probes for new effects beyond the Standard Model (SM). In the SM, these decays are forbidden at tree level and are therefore loop-suppressed. In SM extensions, new, heavy particles can significantly contribute and affect both their branching fractions as well as their angular distributions. The rare decay $B^0\to K^{\ast 0}(\to K^{+}{\pi }^{-}){\mu }^{+}{\mu }^{-}$ is of particular interest, since it gives access to many angular observables, allowing to model-independently test the operator structure of the decay. A previous analysis of the angular distributions of the final state particles showed interesting tensions with SM predictions using the data sample taken by the LHCb detector during 2011. These proceedings will summarize latest results on rare decays from the LHCb experiment with emphasis on the angular analysis of the decay $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$, using the full Run I data sample of the LHCb experiment.

8 pages, 7 figures. Contribution to the proceedings of the 50th Rencontres de Moriond, Electroweak Session, 14-21 March 2015

References in corpus (14)

• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Measurement of the Differential Branching Fraction and Forward-Backword Asymmetry for B->K(*)l+l-
• Angular Distributions of B -> K ll Decays
• Lepton Flavor Violation in B Decays?
• On the impact of power corrections in the prediction of B->K*mu+mu- observables
• Hint of Lepton Flavour Non-Universality in $B$ Meson Decays
• Reassessing the discovery potential of the $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays in the large-recoil region: SM challenges and BSM opportunities
• Scalar leptoquarks and the rare B meson decays
• $B\to S$ Transition Form Factors in the PQCD approach
• $B_s\to f_0(980)$ form factors and $B_s$ decays into $f_0(980)$
• Resonances gone topsy turvy - the charm of QCD or new physics in $b\to s{\ell }^{+}{\ell }^{-}$?
• Implications of $b\to s$ measurements
• Angular analysis of the $B^0\to K^{\ast 0}{e}^{+}{e}^{-}$ decay in the low-$q^2$ region
• Lambda_b -> Lambda l+ l- form factors and differential branching fraction from lattice QCD

Cited by in corpus (8)

• $B_{(s)}^0$-mixing matrix elements from lattice QCD for the Standard Model and beyond
• Are the B decay anomalies related to neutrino oscillations?
• Charged-Lepton Mixing and Lepton Flavor Violation
• Constraints on $Z^{\prime }$ Boson within Minimal Flavor Violation
• Computer tools in particle physics
• Decay $B\to K^{\ast }(\to K\pi ){\ell }^{+}{\ell }^{-}$ in covariant quark model
• Analysis of Forward-Backward and Lepton Polarization Asymmetries in $B\to K_1{\ell }^{+}{\ell }^{-}$ Decays in the Two-Higgs-doublet Model
• NP models with extended gauge groups and extra dimensions: Impact on flavour observables in RS${}_c$