# The $\bar B \to \bar K π\ell \ell$ and $\bar B_s \to \bar K K \ell \ell$ distributions at low hadronic recoil

@article{Das2014TheB, title={The \$\bar B \to \bar K $\pi$\ell \ell\$ and \$\bar B\_s \to \bar K K \ell \ell\$ distributions at low hadronic recoil}, author={Diganta Das and Gudrun Hiller and Martin Jung and Alexander Shires}, journal={arXiv: High Energy Physics - Phenomenology}, year={2014} }

The rare multi-body decays B->K pi ll and B_s->K K ll are both important as backgrounds to precision analyses in the benchmark modes B->K* ll and B_s->phi ll as well as sensitive probes of flavor physics in and beyond the standard model. We work out non-resonant contributions to B->K pi ll and B_s->K K ll amplitudes, where l=e,mu, at low hadronic recoil in a model-independent way. Using the operator product expansion in 1/m_b, we present expressions for the full angular distribution. The latter…

## 11 Citations

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In this paper we discuss the Standard Model and new physics sensitivity of the $\Lambda_b\to\Lambda^\ast(1520)(\to N\!\bar{K})\ell^+\ell^-$ decay at low-recoil, where $\ell^\pm$ are massive leptons…

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Abstract
We derive a set of light-cone sum rules relating the hadronic form factors relevant for B → Kπℓ
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A bstractA measurement of the differential branching fraction of the decay B0 → K∗(892)0μ+μ− is presented together with a determination of the S-wave fraction of the K+π− system in the decay B0 →…

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We generalise the Jacob-Wick helicity formalism, which applies to sequential decays, to effective field theories of rare decays of the type $B \to K_{J_K}(\to K \pi) \bar{\ell}_1 \ell_2$. This is…

### Decay $${B \to K^\ast(\to K\pi)\ell^{+} \ell^{-}}$$B→K*(→Kπ)ℓ+ℓ- in Covariant Quark Model

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The relevant form factors are computed in the framework of the covariant quark model with infrared confinement in the full kinematical momentum transfer region to evaluate branching fractions and polarization observables in the cascade decay.

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A bstractA method for determining the q2 dependent K¯∗0$$ {\overline{K}}^{\ast 0} $$ spin amplitudes of B¯0→K¯∗0μ+μ−$$ {\overline{B}}^0\to {\overline{K}}^{\ast 0}{\mu}^{+}{\mu}^{-} $$ decays through…

### Explaining the lepton non-universality at the LHCb and CMS within a unified framework

- Physics
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A bstractThe recent results from the LHCb in the context of (B+ → K+ll) decay and the CMS analysis in the context of right handed W-boson (WR) search show a 2.6σ and a 2.8σ deviations from the…