Kaon and Pion Electromagnetic Form Factor Ratios in the Light-Front
نویسندگان
چکیده
منابع مشابه
The Pion and Kaon Electromagnetic Form Factors
We use recent data on K + → π + e + e − , together with known values for the pion form factor, to derive the kaon electromagnetic form factor for 0 < q 2 < 0.125 (GeV/c) 2. The results are then compared with predictions of the Linear σ Model, a quark-triangle model and Vector Meson Dominance. The first two models describe the data at least qualitatively, but the simple Vector Meson Dominance pi...
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We study the electromagnetic form factor of the pion and kaons at low-energies with the use of Chiral Perturbation Theory. The analysis is performed within the three flavour framework and at next-to-next-to-leading order. We explain carefully all the relevant consistency checks on the expressions, present full analytical results for the pion form factor and describe all the assumptions in the a...
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The electromagnetic form factor is extracted from both components of the electromagnetic current: J+ and J− with a pseudo-scalar coupling of the quarks to the kaon. In the case of J+ there is no pair term contribution in the Drell-Yan frame (q+ = 0). However, J− component of the electromagnetic current the pair term contribution is different from zero and is necessary include it to preserve the...
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The Standard Model prediction for the magnetic moment of the muon requires a determination of the electromagnetic form factor of the pion at high precision. It is shown that the recent progress in ππ scattering allows us to obtain an accurate representation of this form factor on the basis of the data on e+e− → π+π−. The same method also applies to the form factor of the weak vector current, wh...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2010
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2010.02.044