Hadronic contribution to light-by-light scattering ingμ−2
نویسندگان
چکیده
منابع مشابه
Hadronic light - by - light scattering contribution to g μ − 2 ∗
We briefly review the current status of the hadronic light-by-light scattering correction to the muon g − 2. Then we present our semi-analytical evaluation of the pion-pole contribution, using a description of the pionphoton-photon transition form factor based on large-NC and short-distance properties of QCD. We derive a two-dimensional integral representation which allows to separate the gener...
متن کاملHadronic light-by-light scattering contribution to muon g-2.
The hadronic light-by-light scattering contribution to muon g−2 is examined based on the low energy effective theories of QCD, the Nambu-Jona-Lasinio model and hidden local symmetry approach, supplemented by a general information concerning the asymptotic behavior of QCD. Our result is−52×10−11 with an uncertainty of ±18 × 10−11, which includes our best estimate of model dependence. This is wit...
متن کاملHadronic Light-by-Light Contribution to the Muon g-2.
There are indications that hadronic loops in some electroweak observables are almost saturated by parton level effects. Taking this as the hypothesis for this work, we propose a genuine parton level estimate of the hadronic light-by-light contribution to the anomalous magnetic moment of the muon, a(LBL)/(mu)(had). Our quark mass definitions and values are motivated in detail, and the simplicity...
متن کاملHadronic light - by - light scattering contribution to the muon g − 2 ∗
We briefly review the current status of the hadronic light-by-light scattering correction to the muon g−2. Then we present our semi-analytical evaluation of the pion-pole contribution, using a description of the pion-photonphoton form factor based on large-NC and short-distance properties of QCD. We also sketch an effective field theory approach to hadronic light-by-light scattering. In view of...
متن کاملHadronic light-by-light scattering contribution to the muon anomalous magnetic moment from lattice QCD.
The most compelling possibility for a new law of nature beyond the four fundamental forces comprising the standard model of high-energy physics is the discrepancy between measurements and calculations of the muon anomalous magnetic moment. Until now a key part of the calculation, the hadronic light-by-light contribution, has only been accessible from models of QCD, the quantum description of th...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1994
ISSN: 0556-2821
DOI: 10.1103/physrevd.49.1668