39 citations · 106 across the 10 of their papers we have counts for
10 papers
Studying time-like proton form factors using vortex state annihilation
Nikolai Korchagin
Vortex states of particles - non-plane-wave solutions of the corresponding wave equation with a helicoidal wave front - open new opportunities for particle physics, unavailable in…
Axial meson contribution to proton form factors
Nikolai Korchagin, Andrey Radzhabov
The effect of axial meson exchange on extraction of proton electromagnetic form factors in scattering is calculated. Taking as an example meson exchange, it is qua…
Instanton induced transverse single spin asymmetry for production in -scattering
N. Korchagin, N. Kochelev, Pengming Zhang
We calculate the production cross-section and the transverse single-spin asymmetry for pion in . Our computation is based on existence of the instanton i…
Twisted particle collisions: a new tool for spin physics
Igor P. Ivanov, Nikolai Korchagin, Alexandr Pimikov +1
Collisions of twisted particles --- that is, non-plane-wave states of photons, electrons, or any other particle, equipped with a non-zero orbital angular momentum (OAM) with respec…
Kinematic surprises in twisted particle collisions
Igor P. Ivanov, Nikolai Korchagin, Alexandr Pimikov +1
"Twisted particles" refer to non-plane-wave states of photons, electrons, hadrons, or any other particle which carry non-zero, adjustable orbital angular momentum with respect to t…
Doing spin physics with unpolarized particles
Igor P. Ivanov, Nikolai Korchagin, Alexandr Pimikov +1
Twisted, or vortex, particles refer to freely propagating non-plane-wave states with helicoidal wave fronts. In this state, the particle possesses a non-zero orbital angular moment…
Single-spin asymmetries in SIDIS induced by anomalous gluon-quark and photon-quark couplings
Xu Cao, Nikolai Korchagin, Nikolai Kochelev +1
We calculate the contribution of the non-perturbative Pauli couplings in the quark-photon and quark-gluon vertices to the single-spin asymmetries (SSAs) in semi-inclusive deep inel…
Anomalous Quark Chromomagnetic Moment and Dynamics of Elastic Scattering
Nikolai Kochelev, Nikolai Korchagin
We estimate the contribution of nonperturbative quark-gluon chromomagnetic interaction to the high energy elastic proton-proton cross section at large momentum transfer. It is show…
Anomalous Quark Chromomagnetic Moment and Single-Spin Asymmetries
Nikolai Kochelev, Nikolai Korchagin
We discuss a nonperturbative mechanism for the single-spin asymmetries (SSA) in the strong interaction. This mechanism is based on the existence of a large anomalous quark chromoma…
Anomalous quark-gluon chromomagnetic interaction and high energy -meson electroproduction
Nikolai Korchagin, Nikolai Kochelev, Nikolai Nikolaev
It is shown that existence of a large anomalous chromomagnetic moment of quark induced by non-perturbative structure of QCD leads to the additional contribution to exclusive -me…