Test of factorization for the long-distance effects from charmonium on B→ Kℓ⁺ℓ^-

2019/01/25 by Katsumasa Nakayama, S. Hashimoto, Nakayama, Katsumasa +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1901.08784

openalex publication_date 2019/01/25 · openalex created_date 2019/02/21 · openalex updated_date 2026/07/28

Abstract

We report on a calculation of the charmonium contribution to the decay B → Kℓ⁺ℓ^- using lattice simulations with 2+1 flavors of Mobius domain wall fermions. We focus on the region of q² below the J/ψ resonance and test the factorization approximation to estimate the amplitude. We show a possible discrepancy between the lattice calculation and the factorization method for the non-factorizable contribution.

Related

• Charmonium contribution to B → Kℓ⁺ℓ^-: testing the factorization approximation on the lattice
• Theoretical framework for lattice QCD computations of B→ K ℓ⁺ ℓ^- and B_s→ ℓ⁺ℓ^- γ decays rates, including contributions from "Charming Penguins"
• Non factorizable effects in nonleptonic B decays to charmonium
• Short- vs Long-Distance Dynamics in b → sℓ ℓ Decays
• B_s → Kℓν form factors from lattice QCD with domain-wall heavy quarks