Hadronic cross section measurements and contribution to (g-2)_μ with KLOE

2009/05/12 by P. Beltrame, Paolo Beltrame, Beltrame, Paolo
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.0905.1977

Proceedings for the Rencontres de Moriond QCD 2009

arxiv created 2009/05/12 · arxiv updated 2019/08/13

Abstract

The KLOE experiment at the DAΦNE ϕ-factory has performed a new precise measurement of the pion form factor using Initial State Radiation events. Results based on an integrated luminosity of 240 pb^-1 and extraction of the ππ contribution to a_μ in the mass range 0.35< M²_ππ<0.95 GeV² are presented. The new value of a^ππ_μ has smaller statistical and systematic error and is consistent with the KLOE published value (confirming the current disagreement between the Standard Model prediction for a_μ and the measured value).

Related

• KLOE extraction of a_μ^ππ in the mass range [0.35,0.95] GeV²
• Measurement of the hadronic cross section at DAPHNE with the KLOE detector
• Measuring the Hadronic Cross Section at KLOE using the Radiative Return
• Measurement of the Pion Formfactor with KLOE and Study of the Reaction f0(980) to pi+pi-
• Combination of KLOE σ(e⁺e^-→π⁺π^-γ(γ)) measurements and determination of a_μ^π+π- in the energy range 0.10 < s < 0.95 GeV²