Theory status of b\→ s \ℓ⁺\ℓ^- decays and their combined\n analysis

2012/08/15 by Christoph Bobeth, Bobeth, Christoph
Computer Science · Physics and Astronomy · #Black Holes and Theoretical Physics #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1208.3057

openalex publication_date 2012/08/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The experimental information on b --> s l⁺ l^- decays has grown enormously\nduring the last couple of years due to BaBar, Belle, CDF and LHCb. Especially,\nexclusive modes B --> K^(*) l⁺ l^-, which have the largest rate and are easily\naccessible experimentally, provide a variety of observables which constrain\nnon-standard interactions that would affect these flavour-changing neutral\ncurrent decays beyond the Standard Model. Nowadays, theoretical predictions\nfocus on low- and high dilepton invariant mass regions, where expansions in\nLambda_QCD/m_b and form factor symmetries provide means to identify optimised\nobservables. The first experimental results of non-optimised observables have\nstimulated first global analysis of b --> s l⁺ l^- decays in combination with\nb --> s photon and B_s --> mu⁺ mu^-. Such global analysis are now ready to be\napplied to include high-statistics results from LHCb and Super-Flavour\nfactories which are about to come within the next years.\n

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