First observation of the decay $B^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$

Abstract

A discovery of the rare decay $B^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$ is presented. This decay is observed for the first time, with 5.2 $\sigma$ significance. The observation is made using $pp$ collision data, corresponding to an integrated luminosity of 1.0 fb${}^{-1}$, collected with the LHCb detector. The measured branching fraction is (2.3 $\pm$ 0.6 (stat.) $\pm$ 0.1 (syst.))$\times 10^{-8}$, and the ratio of the $B^{+}\to {\pi }^{+}{\mu }^{+}{\mu }^{-}$ and $B^{+} \rightarrow \K^{+} μ^{+} μ^{-}$ branching fractions is measured to be 0.053 $\pm$ 0.014 (stat.) $\pm$ 0.001 (syst.).

20 pages (including authorlist), 8 figures. Version published in JHEP

References in corpus (19)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• PHOTOS Monte Carlo: a precision tool for QED corrections in Z and W decays
• New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules
• Universal Unitarity Triangle and Physics Beyond the Standard Model
• A Comparative Study of the Decays $B\to (K,K^{\ast }){\ell }^{+}{\ell }^{-}$ in Standard Model and Supersymmetric Theories
• Photonic penguins at two loops and m_t-dependence of BR[ B -> X_s l^+ l^-]
• Observation of Bs-Bsbar Oscillations
• Improved Model-Independent Analysis of Semileptonic and Radiative Rare B Decays
• Two-loop virtual corrections to B --> X_s l^+ l^- in the standard model
• Radiative and Electroweak Penguin Decays of B Mesons
• Minimal Flavour Violation and Beyond
• Measurement of the B^0_s - \bar{B}^0_s oscillation frequency Delta m_s in B^0_s -> D_s^-(3) pi decays
• Observation of b --> d gamma and Determination of |V_td/V_ts|
• Less Minimal Flavour Violation
• Neutral B-meson mixing from three-flavor lattice QCD: Determination of the SU(3)-breaking ratio ξ
• The rare decays $B_u^{+}\to {\pi }^{+}{\ell }^{+}{\ell }^{-}$, ${\rho }^{+}{\ell }^{+}{\ell }^{-}$ and $B_d^0\to {\ell }^{+}{\ell }^{-}$ in the R-parity violating supersymmetry
• Branching Fraction Measurements of B+ -> rho+ gamma, B0 -> rho0 gamma, and B0 -> omega gamma
• Search for $B\to \pi {\ell }^{+}{\ell }^{-}$ Decays at Belle

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• Rare semileptonic $B\to K(\pi )l_i^{-}{l}_j^{+}$ decay in vector leptoquark model
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Rare b hadron decays at the LHC
• Rare $B\to \pi l\bar{l}$ and $B\to \rho l\bar{l}$ decays in the relativistic quark model
• A Search for the Rare Decays B --> pi l+l- and B0 --> eta l+l-
• Implication of possible observation of enhanced Bd0 --> mu+ mu- decay
• Heavy Flavour Physics at the LHC
• Predictions of Angular Observables for ${\bar{B}}_s\to K^{\ast }\ell \ell$ and $\bar{B}\to \rho \ell \ell$ in Standard Model
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• Long-distance weak annihilation contribution to the $B^{\pm }\to ({\pi }^{\pm },K^{\pm }){\ell }^{+}{\ell }^{-}$ decays
• Exploring New Physics in transition $b\to s{\ell }^{+}{\ell }^{-}$ through different $B_c\to D_s^{(\ast )}{\ell }^{+}{\ell }^{-}$ observables
• $B\to \rho$ Decay Form Factors from Covariant Confined Quark Model
• Decay $B_c^{+}\to D_{(s)}^{(\ast )+}{\ell }^{+}{\ell }^{-}$ within covariant confined quark model
• $B_s\to K^{\ast 0}$ decay form factors from covariant confined quark model
• Theory Motivation: What measurements are needed?