How to employ B ¯ d 0 → J / ψ π η , K ¯ K B_d⁰→ J/ψ (\uppi η, KK) decays to extract information on πη scattering

2016/11/30 by M. Albaladejo, J. T. Daub, C. Hanhart +2 · 1 citation
Physics and Astronomy · #Differential (mechanical device) #Dispersion (optics) #Dispersion relation #High-Energy Particle Collisions Research #Meson #Observable #Order (exchange) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Scattering #Spectrum (functional analysis) #hep-ex #hep-ph

paper · pdf · doi:10.1007/jhep04(2017)010

published as JHEP 1704 (2017) 010 · 26 pages, 4 figures; v2: discussion extended, new sec. 3 and app. B, as published in JHEP

openalex publication_date 2017/04/01 · arxiv created 2017/04/06 · arxiv updated 2017/04/07 · openalex created_date 2017/04/07 · openalex updated_date 2026/08/05

Abstract

We demonstrate that dispersion theory allows one to deduce crucial information on πη scattering from the final-state interactions of the light mesons visible in the spectral distributions of the decays B_d⁰→ J/ψ (π⁰η, K⁺K^-,K⁰K⁰) . Thus high-quality measurements of these differential observables are highly desired. The corresponding rates are predicted to be of the same order of magnitude as those for B_d⁰→ J/ψ π⁺π^- measured recently at LHCb, letting the corresponding measurement appear feasible.

Citations

• Model-independent approach to η→π+π−γ and η′→π+π−γ
• Roy–Steiner equations for γγ→ππ
• MO analysis of the high statistics Belle results on γ γ→π + π −, π 0 π 0 with chiral constraints
• QCD factorization in B→πK, ππ decays and extraction of Wolfenstein parameters
• Study of the a0(980) meson via the radiative decay ϕ→ηπ0γ with the KLOE detector
• Chiral perturbation theory: Expansions in the mass of the strange quark
• Review of Multibody Charm Analyses

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