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Implications from clean observables for the binned analysis of B -> K*ll at large recoil by Descotes-Genon, Sebastien; Matias, Joaquim; Ramon, Marc; Virto, Javier is a scholarly article available to read on EtoBox.

What is Implications from clean observables for the binned analysis of B -> K*ll at large recoil about?

We perform a frequentist analysis of q^2-dependent B-> K*(->Kpi)ll angular observables at large recoil, aiming at bridging the gap between current theoretical analyses and the actual experimental measurements. We focus on the most appropriate set of observables to measure and on the role of the q^2-binning. We highlight the importance of the observables P_i exhibiting a limited sensitivity to soft form factors for the search for New Physics contributions. We compute predictions for these binned observables in the Standard Model, and we compare them with their experimental determination extracted from recent LHCb data. Analyzing b->s and b->sll transitions within four different New Physics scenarios, we identify several New Physics benchmark points which can be discriminated through the measurement of P_i observables with a fine q^2-binning. We emphasise the importance (and risks) of using observables with (un)suppressed dependence on soft form factors for the search of New Physics, which we illustrate by the different size of hadronic uncertainties attached to two related observables (P_1 and S_3). We illustrate how the q^2-dependent angular observables measured in several bins can

Author

Descotes-Genon, Sebastien; Matias, Joaquim; Ramon, Marc; Virto, Javier

Published

2012

Language

EN