Hadronic light-by-light scattering contribution to gμ − 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...
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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...
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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 Contribution to Muon g - 2
I present the main results obtained in a recent work together with Eduardo de Rafael and Arkady Vainshtein on the hadronic light-by-light contribution to muon g-2. We came to the estimate aHLbL μ = (10.5 ± 2.6) × 10 −10. Here, some emphasis is put in pointing out where the future KLOE2 twophoton experimental program can help to reduce the present model dependence of aHLbL μ . May 2009 Contribut...
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...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2003
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(03)80174-3