111 citations · 203 across the 4 of their papers we have counts for
4 papers
On the Pion Distribution Amplitude Shape
M. V. Polyakov
We argue that the recent BaBar data on e.m. transition form factor at large photon virtuality supports the idea that pion distribution amplitude (DA) is close to unity wit…
Angular distributions in hard exclusive production of pion pairs
B. Lehmann-Dronke, A. Schaefer, M. V. Polyakov +1
Using the leading order amplitudes of hard exclusive electroproduction of pion pairs we have analyzed the angular distribution of the two produced particles. At leading twist a pio…
Partonic structure of pi and rho mesons from data on hard (semi)exclusive production of two pions off nucleon
B. Clerbaux, M. V. Polyakov
We fitted the pi-pi mass distribution in the range 0.5 < mpipi < 1.1 GeV measured in hard exclusive positron-proton reactions at HERA by the form dictated by QCD at leading twist l…
The intrinsic charm contribution to the proton spin
M. V. Polyakov, A. Schaefer, O. V. Teryaev
The charm quark contribution to the first moment of is calculated using a heavy mass expansion of the divergence of the singlet axial current. It is shown to be small.