Abstract
We show that a modification of the model with a low energy scalar leptoquark state carrying hypercharge Y = 7/6 allows to accommodate both R K < 1 and R K ∗ < 1, through loop effects, consistent with recent observations made at LHCb. We describe details of the model, compute the relevant Wilson coefficient and, after discussing a number of constraints, we examine the phenomenological consequences of the model. The bounds on the lepton flavor violating decay rates, induced by this model, include \( \mathrm{\mathcal{B}}\left(Z\to \mu \tau \right)\ \lesssim \mathcal{O}\left(1{0^{-}}^7\right) \), and \( \mathrm{\mathcal{B}}\left(B\to K\mu \tau \right)\ \lesssim \mathcal{O}\left(1{0^{-}}^9\right) \). We also comment on the interpretation of the bounds on the leptoquark mass obtained from the direct searches at LHC.
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Bečirević, D., Sumensari, O. A leptoquark model to accommodate R exp K < R SM K and \( {R}_{K^{\ast}}^{\exp }<{R}_{K^{\ast}}^{\mathrm{SM}} \) . J. High Energ. Phys. 2017, 104 (2017). https://doi.org/10.1007/JHEP08(2017)104
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DOI: https://doi.org/10.1007/JHEP08(2017)104