2009/01/01 by G. Venanzoni, Graziano Venanzoni, Marvin L. Marshak · 10 citations
Physics and Astronomy · #Astrophysics #High-Energy Particle Collisions Research #Luminosity #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Radiation #Range (aeronautics) #Statistics #Systematic error #Value (mathematics) #hep-ex
paper · pdf · doi:10.1063/1.3293895
published in AIP conference proceedings, 665-669 (American Institute of Physics) · 5 pages, proceedings for the CIPANP 2009 conference
openalex publication_date 2009/01/01 · arxiv created 2009/06/23 · openalex created_date 2016/06/24 · arxiv updated 2019/08/13 · openalex updated_date 2026/08/05
The KLOE experiment at the DAΦNE φ‐factory has performed a new precise measurement of the pion form factor using Initial State Radiation events, with photons emitted at small polar angle. Results based on an integrated luminosity of 240 pb−1 and extraction of the ππ contribution to aμ in the mass range 0.35<Mππ2<0.95 GeV2 are presented. The new value of aμππ has smaller (30%) statistical and systematic error and is consistent with the KLOE published value (confirming the current disagreement between the standard model prediction for aμ and the measured value).