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7 papers · 2 filters
Pion form factor and QCD sum rules: case of pseudoscalar current
V. V. Braguta, A. I. Onishchenko
We present an analysis of QCD sum rules for pion form factor in next-to-leading order of perturbation theory for the case of pseudoscalar pion currents. The essential instanton con…
Nonforward anomalous dimensions of Wilson operators in N=4 super-Yang-Mills theory
A. I. Onishchenko, V. N. Velizhanin
We present the next-to-leading order results for universal non-forward anomalous dimensions of Wilson twist-2 operators in N=4 supersymmetric Yang-Mills theory. The whole calculati…
Anomalous dimensions of twist-2 conformal operators in supersymmetric Wess-Zumino model
A. I. Onishchenko, V. N. Velizhanin
We are studying scale properties of twist-2 conformal operators in supersymmetric Wess-Zumino model. In particular, we are interested in a construction of multiplicatively renormal…
Comment on the new resonances
Thomas E. Browder, Sandip Pakvasa, Alexey A. Petrov
We propose an explanation of the new resonances observed in decays. We suggest that the data can be explained by the mixing of conventional p-wave excited …
B0 - anti-B0 mixing beyond factorization
J. G. Korner, A. I. Onishchenko, A. A. Petrov +1
We present a calculation of the B0 - anti-B0 mixing matrix element in the framework of QCD sum rules for three-point functions. We compute alpha_s corrections to a three-point func…
Lambda_b lifetime puzzle in heavy-quark expansion
Fabrizio Gabbiani, Andrei I. Onishchenko, Alexey A. Petrov
Lifetime differences of heavy hadrons can be consistently computed in heavy-quark expansion. The leading effects appear through spectator interactions at order 1/m_b^3. We compute…