Long distance radiative corrections to the decayτ−→π−π0ντ

2006/08/31 by F. Flores-Baez, Francisco V. Flores-Baez, A. Flores-Tlalpa +4 · 3 citations
Physics and Astronomy · #Algorithm #Computer science #Dark Matter and Cosmic Phenomena #Database #Optics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Radiative transfer #hep-ph

paper · pdf · doi:10.1103/physrevd.74.071301

published as Phys.Rev. D74 (2006) 071301 · 4 pages, 2 figures. An estimate of the shift produced in the evaluation of the h.v.p. contribution to the muon anomalous magnetic moment is added. Version to appear in Phys. Rev. D

arxiv created 2006/10/16 · openalex publication_date 2006/10/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We evaluate the model-dependent piece of O(\ensuremathα) long-distance radiative corrections to \ensuremathτ^\ensuremath-\ensuremath→\ensuremathπ^\ensuremath-\ensuremathπ⁰\ensuremathν_\ensuremathτ decays by using a meson dominance model. We find that these corrections to the di-pion invariant mass spectrum are smaller than in previous calculations based on chiral perturbation theory. The corresponding correction to the photon inclusive rate is tiny (\ensuremath-0.15%) but it can be of relevance when new measurements reach better precision.

Citations

• Current algebra formulation of radiative corrections in gauge theories and the universality of the weak interactions
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Review of particle properties

Cited by

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• The discrepancy between τ and e + e − spectral functions revisited and the consequences for the muon magnetic anomaly