The Bd → K∗μ+μ− decay: A study in the Standard Model

Ciuchini, M. and Fedele, M. and Franco, E. and Mishima, S. and Paul, A. and Silvestrini, L. and Valli, M. (2016) The Bd → K∗μ+μ− decay: A study in the Standard Model. Il nuovo cimento C, 39 (1). pp. 1-3. ISSN 1826-9885

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The rare semileptonic Bd → K∗μ+μ− decay has been extensively studied within the Standard Model and beyond. Recently, data provided by the LHCb experiment suggested the presence of new physics given the discrepancy found between the theoretical and the experimental value of a certain observable (P'5) at low q2. This requires a careful re-examination of the Standard Model estimates so that a discrimination between the latter and any model of new physics can be made. We present in this work a Bayesian analysis of the decay in the full range of q2, in which we perform a full fit from available data. We also make well-motivated arguments about the size of the hadronic uncertainties and ultimately study the compatibility of the currently available experimental data with the Standard Model predictions.

Item Type: Article
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 23 Jun 2020 11:33
Last Modified: 23 Jun 2020 11:33

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