Rare $b\to s\ell^+\ell^-$ decays are flavour-changing neutral-current processes that are forbidden at the lowest perturbative order in the Standard Model (SM). As a consequence, new particles in SM extensions can significantly affect the branching fractions of these decays and their angular distributions, as well as affect the coupling of the electroweak gauge bosons of the SM to leptons in a non-universal way. Tensions have been observed at the LHCb experiment, in particular when comparing $b\to s\mu^+\mu^-$ and $b\to se^+e^-$ decays.
Recent results from the LHCb experiment in this area are presented, with special focus on the experimental techniques used to study decays with electrons in the final state.
Volume 326 -
The International Conference on B-Physics at Frontier Machines (BEAUTY2018) -
Session: b->s penguin decays
Rare $b \to s \ell^+ \ell^−$ analyses with electrons
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Pre-published on:
July 31, 2018
Published on:
October 30, 2018
Abstract
DOI: https://doi.org/10.22323/1.326.0047
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.