Measurement of form-factor independent observables in the decay $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$

Abstract

We present a measurement of form-factor independent angular observables in the decay \mbox{$B^0\to K^{\ast }(892{)}^0{\mu }^{+}{\mu }^{-}$}. The analysis is based on a data sample corresponding to an integrated luminosity of 1.0fb${}^{-1}$, collected by the LHCb experiment in $pp$ collisions at a center-of-mass energy of 7TeV. Four observables are measured in six bins of the dimuon invariant mass squared, $q^2$, in the range $0.1<q^2<19.0$GeV${}^2$/c${}^4$. Agreement with Standard Model predictions is found for 23 of the 24 measurements. A local discrepancy, corresponding to $3.7$ Gaussian standard deviations, is observed in one $q^2$ bin for one of the observables. Considering the 24 measurements as independent, the probability to observe such a discrepancy, or larger, in one is $0.5\%$.

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• Exploring New Physics in transition $b\to s{\ell }^{+}{\ell }^{-}$ through different $B_c\to D_s^{(\ast )}{\ell }^{+}{\ell }^{-}$ observables
• Neutrinophilic DM annihilation in a model with $U(1{)}_{L_{\mu }-L_{\tau }}\times U(1{)}_H$ gauge symmetry
• Hide and Seek with the Third Family Hypercharge Model's $Z^{\prime }$ at the Large Hadron Collider
• Isospin extrapolation as a method to study inclusive $\bar{B}\to X_s{\ell }^{+}{\ell }^{-}$ decays
• Investigation of rare semileptonic $B_c$ decays into $(D_{(}s,d{)}^{(}(\ast ))){\mu }^{+}{\mu }^{-}$ decays with non-universal $Z^{\prime }$ effect
• Understanding the muon anomalous magnetic moment in light of a flavor symmetry-based Minimal Supersymmetric Standard Model
• Minimal non-universal EW extensions of the Standard Model: a chiral multi-parameter solution
• The b --> s l^+ l^- anomalies and their implications for new physics
• Model independent investigation of rare semileptonic b \to u l \barν_l decay processes
• Signal of doubly charged Higgs at $e^{+}{e}^{-}$ colliders
• Searching for New Physics in Semi-Leptonic Baryon Decays
• Scalar dark matter, Neutrino mass and Leptogenesis in a $\mathrm{U}(1{)}_{\mathrm{B}-\mathrm{L}}$ model
• A multi-charged particle model with local $U(1{)}_{\mu -\tau }$ to explain muon $g-2$, flavor physics, and possible collider signature
• The Neutrino Magnetic Moment Portal
• Analysis of Angular Observables of ${\Lambda }_b\to \Lambda (\to p\pi ){\mu }^{+}{\mu }^{-}$ Decay in Standard and $Z^{\prime }$ Models
• Rare decays of b hadrons
• Singlet vector leptoquark model facing recent LHCb and BABAR measurements
• The ${\Lambda }_b\to \Lambda (\to p{\pi }^{-}){\mu }^{+}{\mu }^{-}$ decay in the ${\text{RS}}_c$ model
• b-s Anomaly Decays in Covariant Quark Model
• Singlet Heavy Fermions as the Origin of B Anomalies in Flavour Changing Neutral Currents
• TeV-scale vector leptoquark from Pati-Salam unification with vectorlike families
• $E_6$ Models in Light of Precision $M_W$ Measurements
• Three Lectures of Flavor and CP violation within and Beyond the Standard Model
• Analysis of Forward-Backward and Lepton Polarization Asymmetries in $B\to K_1{\ell }^{+}{\ell }^{-}$ Decays in the Two-Higgs-doublet Model
• Challenges for New Physics in the Flavour Sector
• B meson decay anomaly with a non-universal U(1)' extension
• Status after the first LHC run: Looking for new directions in the physics landscape
• Scrutinizing $B^0$-meson flavor changing neutral current decay into scalar $K_0^{\ast }(1430)$ meson with $b\to s{\ell }^{+}{\ell }^{-}(\nu \bar{\nu })$ transition
• New physics in $b\to s{e}^{+}{e}^{-}$: A model independent analysis
• Lepton Flavor Violating $B\to K_2^{\ast }(1430){\mu }^{\pm }{\tau }^{\mp }$ Decays
• Signs for new physics in the recent LHCb data?
• Study of $B_s^0\to l^{+}{l}^{-}\gamma$ decays in the nonuniversal Z' model
• Implications of new physics in $B\to K_1{\mu }^{+}{\mu }^{-}$ decay processes
• ${\Lambda }_b\to \Lambda (\to p{\pi }^{-}){\ell }^{+}{\ell }^{-}$ as probe of CP-violating New Physics
• Collider imprint of vector-like leptons in light of anomalous magnetic moment and neutrino data
• Decay $B_c^{+}\to D_{(s)}^{(\ast )+}{\ell }^{+}{\ell }^{-}$ within covariant confined quark model
• Three decades of FCNC studies in 3-3-1 model with right-handed neutrinos: from $Z^{\prime }$-dominance to the alignment limit
• Theoretical Review of Rare B Decays
• Theory status and implications of $R_K^{(\ast )}$
• Resolved Power Corrections to the Inclusive Decay $\bar{B}\to X_s{\ell }^{+}{\ell }^{-}$
• New Physics Interpretations of the B-->K*mu+mu- Anomaly
• The Beautiful Physics of LHC Run 2
• Explaining the LHC flavour anomalies
• Probing new physics effects in ${\Lambda }_b\to \Lambda (\to p{\pi }^{-}){\ell }^{+}{\ell }^{-}$ decay via model independent approach
• Heavy quark expansion of ${\Lambda }_b\to {\Lambda }^{\ast }(1520)$ form factors beyond leading order
• A Short Guide to Flavour Physics and CP Violation
• New Physics in Flavour Observables
• Towards the Identification of New Physics through Correlations between Flavour Observables
• Non-universal Z' models with protected flavour-changing interactions
• Tensions in the flavour sector
• $\ge 4\mu$ signal from a vector-like lepton decaying to a muon-philic $Z^{\prime }$ boson at the LHC
• Electroweak $t\bar{t}$ hadroproduction in the presence of heavy $Z^{\prime }$ and $W^{\prime }$ bosons at NLO QCD in POWHEG
• Round table on Standard Model Anomalies
• CKM studies from b physics at hadron machines
• Theoretical implications of recent heavy flavour measurements at the LHC
• A bonus complementarity in Simplified Models of Dark Matter
• Non-universal electroweak extensions of the standard model and the scotogenic models
• Diagnosing New Physics with LUV and LFV B Decays
• New Physics in $B$ decays
• Rare FCNC top, beauty and charm decays
• Implications of lepton nonuniversality in the beauty sector
• Recent results from the Belle experiment
• The LHCb prompt charm triggers
• Indirect search for New Physics: complementarity to direct searches
• Exploring nonstandard quark interactions through solar neutrino studies
• Summary of the CKM 2014 working group on rare decays
• New Physics Hints from Flavour
• Searching for New Physics with $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$
• Flavour anomalies in supersymmetric scenarios with non-minimal flavour violation
• Precise predictions for electroweak $t\bar{t}$ production at the LHC in models with flavour non-diagonal $Z^{\prime }$ boson couplings and $W^{\prime }$ bosons
• $B_s^{\ast }\to l^{+}{l}^{-}$ decays in light of recent $B$ anomalies
• A possible solution of $B$ arrow $\pi \pi$ puzzle in Z' model
• Selection of LHCb results from Run I
• Combined analysis of $B_c\to D_s^{(\ast )}{\mu }^{+}{\mu }^{-}$ and $B_c\to D_s^{(\ast )}\nu \bar{\nu }$ decays within $Z^{\prime }$ and leptoquark new physics models