Extracting short distance information from b -> s l+ l- effectively

Abstract

We point out that in inclusive B -> Xs l+ l- decay an angular decomposition provides a third (q^2 dependent) observable sensitive to a different combination of Wilson coefficients than the rate and the forward-backward asymmetry. Since a precise measurement of q^2 dependence requires large data sets, it is important to consider the data integrated over regions of q^2. We develop a strategy to extract all measurable Wilson coefficients in B -> Xs l+ l- from a few simple integrated rates in the low q^2 region. A similar decomposition in B -> K* l+ l-, together with the B -> K* γrate, also provides a determination of the Wilson coefficients, without reliance on form factor models and without having to measure the zero of the forward-backward asymmetry.

13 pages, 3 figures, v2: minor improvements in text, references added, v3: journal version

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Cited by in corpus (30)

• Angular Distributions of B -> K ll Decays
• Flavor Physics in the Quark Sector
• Treating the b quark distribution function with reliable uncertainties
• Rare $B$ Decays as Tests of the Standard Model
• General Analysis of B -> K^(*) l^+ l^- Decays at Low Recoil
• Predictions for Lepton Flavor Universality Violation in Rare B Decays in Models with Gauged $L_{\mu }-L_{\tau }$
• Scalar leptoquarks and the rare B meson decays
• B, D and K decays
• Angular Distributions in the Decays B -> K* l+l-
• Logarithmically Enhanced Corrections to the Decay Rate and Forward Backward Asymmetry in anti-B --> X(s) l+ l-
• Deciphering top flavor violation at the LHC with B factories
• New Physics in b -> s mu+ mu-: CP-Conserving Observables
• Radiative and Electroweak Penguin Decays of B Mesons
• New Physics at a Super Flavor Factory
• Precise predictions for ${\Lambda }_b\to {\Lambda }_c$ semileptonic decays
• Building Blocks for Subleading Helicity Operators
• Measurement of Angular Asymmetries in the Decays B->K*l+l-
• Precise predictions for B -> Xs l+ l- in the large q^2 region
• Heavy-to-light currents at NNLO in SCET and semi-inclusive anti-B ---> X(s) l+ l- decay
• Endpoint Relations for Baryons
• $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ Forward-backward Asymmetry and New Physics
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• Subleading Shape-Function Effects and the Extraction of |V_ub|
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• Extracting the Bs - anti-Bs mixing angle from B--> VV decays and comments on the puzzling B--> K* l+l- decay