# Zooming in on $$B\rightarrow K^*\ell \ell $$B→K∗ℓℓ decays at low recoil

@article{Brass2016ZoomingIO, title={Zooming in on \$\$B\rightarrow K^*\ell \ell \$\$B→K∗ℓℓ decays at low recoil}, author={Simon Brass and Gudrun Hiller and Ivan Nǐsand{\vz}i{\'c}}, journal={The European Physical Journal C}, year={2016}, volume={77}, pages={1-16} }

We analyse $$B\rightarrow K^*\ell \ell $$B→K∗ℓℓ decays in the region of low hadronic recoil, where an operator product expansion (OPE) in $$1/m_b$$1/mb applies. Using a local model for charm contributions based on $$e^+ e^- \rightarrow \mathrm{hadrons}$$e+e-→hadrons against the OPE provides a data-driven method to access the limitations to the OPE’s accuracy related to binnings in the dilepton mass. Model-independent fits to $$B\rightarrow K^*\mu \mu $$B→K∗μμ low recoil angular observables…

## 7 Citations

### Endpoint relations for baryons

- PhysicsJournal of High Energy Physics
- 2021

Abstract
Following our earlier work we establish kinematic endpoint relations for baryon decays using the Wigner-Eckart theorem and apply them to $$ \frac{1}{2}\to \frac{1}{2} $$
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### Non-local matrix elements in B(s) → {K(*), ϕ}ℓ+ℓ−

- Physics
- 2021

We revisit the theoretical predictions and the parametrization of non-local matrix elements in rare $$ {\overline{B}}_{(s)}\to \left\{{\overline{K}}^{\left(\ast \right)},\phi…

### B-decay discrepancies after Moriond 2019

- PhysicsThe European Physical Journal C
- 2020

Following the updated measurement of the lepton flavour universality (LFU) ratio $$R_K$$RK in $$B\rightarrow K\ell \ell $$B→Kℓℓ decays by LHCb, as well as a number of further measurements, e.g.…

### Manifestation of Nonuniversality of Lepton Interactions in Spontaneously Violated Mirror Symmetry

- Physics
- 2018

Data from the LHCb experiments are indicative of a substantial distinction between the B → K (or K*) + e+e− and B → K (or K*) + μ+μ− branching ratios (April 2017). The branching ratio for the e+e−…

### An empirical model of the long-distance contributions to $\bar{B}^{0} \rightarrow \bar{K}^{*0}\mu^{+}\mu^{-}$ transitions

- Physics
- 2017

A method for determining the long-distance contributions in $\bar{B}^{0} \rightarrow \bar{K}^{*0}\mu^{+}\mu^{-}$ decays is presented. This method uses an empirical model that relies on measurements…

### $B^0\to K^{\ast 0}\mu^+\mu^-$ decay in the Aligned Two-Higgs-Doublet Model

- Physics
- 2016

In the aligned two-Higgs-doublet model, we perform a complete one-loop computation of the short-distance Wilson coefficients $C_{7,9,10}^{(\prime)}$, which are the most relevant ones for $b\to…

### $B \to K^* \ell \ell$ Standard Model contributions -- Zooming in on high $q^2$

- Physics
- 2016

To further precision studies with $B \to K^{(*)} \ell \ell$ decays in the high-$q^2$ window uncertainties related to the operator product expansion (OPE) need to be scrutinized. How well can the OPE…

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