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New physics in rare B decays after Moriond 2021

Altmannshofer, Wolfgang ; Stangl, Peter

The European physical journal. C, Particles and fields, 2021-10, Vol.81 (10), p.952-952, Article 952 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
New physics in rare B decays after Moriond 2021
Autor: Altmannshofer, Wolfgang ; Stangl, Peter
Assuntos: Anomalies ; Approximation ; Astronomy ; Astrophysics and Cosmology ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; Elementary Particles ; Fermions ; Flavor (particle physics) ; Hadrons ; Heavy Ions ; High Energy Physics - Phenomenology ; Leptons ; Measurement Science and Instrumentation ; Muons ; Nuclear Energy ; Nuclear Physics ; Physics ; Physics and Astronomy ; Quantum Field Theories ; Quantum Field Theory ; Regular - Theoretical Physics ; Regular Article - Theoretical Physics ; Standard model (particle physics) ; String Theory ; Theoretical physics
É parte de: The European physical journal. C, Particles and fields, 2021-10, Vol.81 (10), p.952-952, Article 952
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
SC0010107; 200020175449/1
USDOE Office of Science (SC)
Swiss National Science Foundation (SNSF)
Descrição: The anomalies in rare B decays endure. We present results of an updated global analysis that takes into account the latest experimental input – in particular the recent results on R K and BR ( B s → μ + μ - ) – and that qualitatively improves the treatment of theory uncertainties. Fit results are presented for the Wilson coefficients of four-fermion contact interactions. We find that muon specific Wilson coefficients C 9 ≃ - 0.73 or C 9 = - C 10 ≃ - 0.39 continue to give an excellent description of the data. If only theoretically clean observables are considered, muon specific C 10 ≃ 0.60 or C 9 = - C 10 ≃ - 0.35 improve over the Standard Model by Δ χ 2 ≃ 4.7 σ and Δ χ 2 ≃ 4.6 σ , respectively. In various new physics scenarios we provide predictions for lepton flavor universality observables and CP asymmetries that can be tested with more data. We update our previous combination of ATLAS, CMS, and LHCb data on BR ( B s → μ + μ - ) and BR ( B 0 → μ + μ - ) taking into account the full two-dimensional non-Gaussian experimental likelihoods.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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New physics in rare B decays after Moriond 2021

Altmannshofer, Wolfgang ; Stangl, Peter

Berlin/Heidelberg: Springer Berlin Heidelberg

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