Palatable leptoquark scenarios for lepton flavor violation in exclusive b → sℓ1ℓ2 modes

By D. Bevcirevi'c, Nejc Kovsnik, O. Sumensari, R. Funchal. 2016

199 citations recorded by the source corpus.

A bstractWe examine various scenarios that involve a light O$$ \mathcal{O} $$(1 TeV) leptoquark state and select those which are compatible with the current experimental values for ℬ(Bs → μμ), ℬB→Kμμlarge−q2,RK=ℬ′B→Kμμ/ℬ′B→Kee$$ \mathrm{\mathcal{B}}{\left(B\to K\mu \mu \right)}_{\mathrm{large}-{q}^2},{R}_K={\mathrm{\mathcal{B}}}^{\prime}\left(B\to K\mu \mu \right)/{\mathrm{\mathcal{B}}}^{\prime}\left(B\to Kee\right) $$, and which lead to predictions consistent with other experimental data. We show that two such scenarios are phenomenologically plausible, namely the one with a doublet of scalar leptoquarks of hypercharge 1/6, and the one with a triplet of vector leptoquarks of hypercharge 2/3. We also argue that a model with a singlet scalar leptoquark of hypercharge 1/3 is not viable. Using the present experimental data as constraints, it is shown that the exclusive lepton flavor violating decays, ℬ(Bs → μτ), ℬ(B → Kμτ) and ℬ(B → K∗μτ), can be as large as O10−5$$ \mathcal{O}\left(1{0}^{-5}\right) $$.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/88ed171bffbb272489adb3c90ecd4eacb73c919c

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In Nuclear and High Energy Physics

Citations in the corpus

Reconsidering the one leptoquark solution: flavor anomalies and neutrino mass (2017, methodology): “[41], is naturally relieved for leptoquark masses mφ & 1 TeV.”
Charged Lepton Flavour Violation: An Experimental and Theoretical Introduction (2017, background): “Detailed discussions of the LQ models with a particular focus on their implications for CLFV observables are presented in [233, 234, 235, 236] (for a general review on LQs see [237]), in particular [236] considers the consequences for μ→ e observables of introducing LQs with sizeable couplings to bo”