Hamburg 2016 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 32: Flavourphysik (Theorie)

T 32.4: Vortrag

Montag, 29. Februar 2016, 17:30–17:45, VMP8 SR 106

The impact of Λ_b→ Λ ℓ⁺ℓ⁻ in global fits of rare b→ sℓ⁺ℓ⁻ decays — Stefan Meinel^1,2 and •Danny van Dyk³ — ¹University of Arizona, Tucson (AZ), USA — ²RIKEN BNL Research Center, Upton (NY), USA — ³Universität Zürich, Zürich, Switzerland

We carry out a global fit of the Wilson coefficients C₇, C₉ and C₁₀ based on the most recent experimental results on exclusive and inclusive rare b→ sγ and b→ s ℓ⁺ℓ⁻ decays. We specifically investigate the impact of the decay Λ_b→ Λ(→ p π⁻) ℓ⁺ℓ⁻. Updates of the Λ_b→ Λ form factors from lattice QCD reduce the theoretical uncertainties for this channel.