The Hadronic Contribution to the Muon g-2
Andreas Hocker
Abstract
The evaluation of the hadronic contribution to the muon magnetic anomaly amu is reviewed, including a new estimate using precise results on the pi+pi- spectral function from the KLOE Collaboration. It is found that the KLOE data confirm to some extent the previous e+e- annihilation data in this channel, and accentuate the disagreement with the isospin-breaking-corrected spectral function from tau- -> pi-pi0 nu decays. Correcting for the empirical difference in the mass of the charged and the neutral rho locally improves, but does not resolve this discrepancy. A preliminary reevaluation (including the KLOE data) of the e+e- -based Standard Model prediction of amu results in a deviation of 2.7 standard deviations from the BNL measurement.
Create a lesson
Related papers
Comment on "Long-range magnetic fields in the ground state of the Standard Model plasma"
Jingwei Wang, Yiming Liu, Ligong Bian
Semiparametric Estimation of Physics Parameters and Parton Distribution Functions
Huanbiao Zhu, Jaco ter Hoeve, Mikael Kuusela et al.
Observable gravitational waves from unstable ALP catastrogenesis
Graciela B. Gelmini, Jonah Hyman, Yu Watanabe
Revisiting the gamma-ray signal from light ALPs emitted during the evaporation of memory-burdened PBHs
Cheng-Rui Jiang, Tong Li
Holographic spin alignment of vector mesons in a spinning black-hole background
Fei Wang, Zi-qiang Zhang
Modeling a Framework for Comprehensive Analysis of p\!A Transverse Analyzing Power Measurements at the RHIC HJET
Andrei Poblaguev