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Analysis of γ^ast Λ to Sigma⁰ transition in QCD

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arxiv 1303.6897 v2 pith:74NYVYJD submitted 2013-03-27 hep-ph

Analysis of γ^ast Λ to Sigma⁰ transition in QCD

classification hep-ph
keywords formlambdasigmabaryonfactorsgammatransitionamplitudes
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The $\gamma^\ast \Lambda \to \Sigma^0$ transition form factors are investigated within the light--cone QCD sum rules method. Using the most general form of the interpolating current of $\Sigma^0$ baryon and the distribution amplitudes of $\Lambda$ baryon we calculate the $Q^2$ dependence of the electromagnetic form factors. Our result are compared with the predictions of the covariant spectator quark model.

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