321 citations · 1.6k across the 46 of their papers we have counts for
10 papers · 1 filter
DVCS via color dipoles: Nonperturbative effects
B. Z. Kopeliovich, Ivan Schmidt, M. Siddikov
We study the DVCS amplitude within the color dipole approach. The light-cone wave function of a real photon is evaluated in the instanton vacuum model. Our parameter free calculati…
Modular application of an Integration by Fractional Expansion (IBFE) method to multiloop Feynman diagrams
Ivan Gonzalez, Ivan Schmidt
We present an alternative technique for evaluating multiloop Feynman diagrams, using the integration by fractional expansion method. Here we consider generic diagrams that contain…
Modular application of an Integration by Fractional Expansion (IBFE) method to multiloop Feynman diagrams II
Ivan Gonzalez, Ivan Schmidt
A modular application of the integration by fractional expansion (IBFE) method for evaluating Feynman diagrams is extended to diagrams that contain loop triangle subdiagrams in the…
Azimuthal Asymmetry of pions in pp and pA collisions
B. Z. Kopeliovich, A. H. Rezaeian, Ivan Schmidt
We investigate the azimuthal asymmetry v2 of produced pions in pp and pA collisions at both RHIC and SPS energies. In our approach, based on the pQCD parton model and the light-con…
asymmetries in unpolarized semi-inclusive DIS
Bing Zhang, Zhun Lu, Bo-Qiang Ma +1
We use the Boer-Mulders functions parameterized from unpolarized Drell-Yan data by the FNAL E866/NuSea Collaboration combined with recently extracted Collins functions to cal…
Leading neutrons from polarized pp collisions
B. Z. Kopeliovich, I. K. Potashnikova, Ivan Schmidt +1
We calculate the cross section and single-spin azimuthal asymmetry, A_n(t) for inclusive neutron production in pp collisions at forward rapidities relative to the polarized proton.…