Search for the Decay B_s⁰ → η^′ η

2020/09/13 by A. Abdesselam, Belle Collaboration, Abdesselam, A. +545
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2009.06052

openalex publication_date 2020/09/13 · openalex created_date 2022/07/18 · openalex updated_date 2026/07/28

Abstract

In the Standard Model (SM) charmless hadronic decays B_s⁰ → η^′ η proceed via tree-level b→ u and penguin b→ s transitions. Penguin transitions are sensitive to Beyond-the-Standard-Model (BSM) physics scenarios and could affect the branching fractions and \it CP asymmetries in such decays. Once branching fractions for two-body decays B_s → ηη, ηη^′, η^′η^′ are measured, and the theoretical uncertainties are reduced, it would be possible to extract \it CP violating parameters from the data using the formalism based on SU(3)/U(3) symmetry. To achieve this goal, at least four of these six branching fractions need to be measured. Only the branching fraction for B_s⁰ → η^′η^′ has been measured so far.

Related

• Search for the decay B_s⁰ → η^′ K_S⁰
• B_s → (ρ, ω, ϕ) η^(′) Decays in the Perturbative QCD Approach
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