New physics in semileptonic B decays
| Autor: | Lars Hofer, Bernat Capdevila, Sébastien Descotes-Genon, Javier Virto, Joaquim Matias |
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| Přispěvatelé: | Laboratoire de Physique Théorique d'Orsay [Orsay] (LPT), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Quantum chromodynamics
Physics form factor Large Hadron Collider B: semileptonic decay 530 Physics new physics effective Hamiltonian Physics beyond the Standard Model Hadron High Energy Physics::Phenomenology Wilson LHC-B lepton: flavor Universality (dynamical systems) Theoretical physics CERN LHC Coll [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] quantum chromodynamics: effect CP: violation High Energy Physics::Experiment universality: violation |
| Zdroj: | PoS 14th Conference on Flavor Physics and CP Violation 14th Conference on Flavor Physics and CP Violation, Jun 2016, Pasadena, United States. pp.012, ⟨10.22323/1.280.0012⟩ Scopus-Elsevier Descotes-Genon, Sébastien; Capdevila, Bernat; Hofer, Lars; Matias, Joaquim; Virto Iñigo, Javier (13 January 2017). New physics in semileptonic B decays. PoS-proceedings of science, FPCP2016. Scuola Internazionale Superiore di Studi Avanzati SISSA |
| DOI: | 10.22323/1.280.0012⟩ |
| Popis: | International audience; Recently, the LHC has found several anomalies in exclusive semileptonic b → s` +` − decays. In this proceeding, we summarise the most important results of our global analysis of the relevant decay modes. After a discussion of the hadronic uncertainties entering the theoretical predictions, we present an interpretation of the data in terms of generic new physics scenarios. To this end, we have performed model-independent fits of the corresponding Wilson coefficients to the data and have found that in certain scenarios the best fit point is prefererred over the Standard Model by a global significance of more than 4σ. Based on the results, the discrimination between high-scale new physics and low-energy QCD effects as well as the possibility of lepton-flavour universality violation are discussed. |
| Databáze: | OpenAIRE |
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