Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Borisyuk, Dmitry"'
Autor:
Borisyuk, Dmitry, Kobushkin, Alexander
We reanalyze electron-proton scattering data in the momentum transfer region $Q^2 < 1\ GeV^2$, which were used to determine proton electric radius, with main focus on the Mainz experiment (Bernauer et al., 2010). We examine dependence of fit results
Externí odkaz:
http://arxiv.org/abs/2006.08411
Autor:
Borisyuk, Dmitry, Kobushkin, Alexander
Publikováno v:
Ukr.J.Phys. 66, No. 1, 3 (2021)
In the present review we discuss different aspects of the two-photon exchange (TPE) physics in elastic $ep$ scattering, at high $Q^2$ as well as at low $Q^2$. The imaginary part of the TPE amplitude gives rise to beam and target single-spin asymmetri
Externí odkaz:
http://arxiv.org/abs/1911.10956
Autor:
Borisyuk, Dmitry, Kobushkin, Alexander
We calculate two-photon exchange amplitudes for the elastic electron-hadron scattering in the nonrelativistic approximation, and obtain analytical formulae for them. Numerical calculations are performed for proton and $^3$He targets. Comparing our nu
Externí odkaz:
http://arxiv.org/abs/1811.06928
Autor:
Borisyuk, Dmitry
Publikováno v:
Phys. Rev. C 96, 055201 (2017)
We study two-photon contribution to the elastic lepton-proton scattering, associated with sigma meson exchange, with special attention paid to the low-Q2 region. We show that the corresponding amplitude grows sharply but remains finite at Q2->0. The
Externí odkaz:
http://arxiv.org/abs/1707.06513
Autor:
Borisyuk, Dmitry, Kobushkin, Alexander
We present a simple parameterization of the two-photon exchange amplitude in elastic electron-proton scattering, suitable for fast numerical evaluation.
Comment: 2 pages, 1 figure; corrected important error in Eq.(5)
Comment: 2 pages, 1 figure; corrected important error in Eq.(5)
Externí odkaz:
http://arxiv.org/abs/1707.06164
Autor:
Borisyuk, Dmitry, Kobushkin, Alexander
Publikováno v:
Phys. Rev. C 92, 035204 (2015)
We calculate two-photon exchange (TPE) amplitudes for the elastic electron-proton scattering, and take into account intermediate hadronic states containing \pi N system with total angular momentum 1/2 or 3/2, which includes 8 different channels. This
Externí odkaz:
http://arxiv.org/abs/1506.02682
Autor:
Borisyuk, Dmitry, Kobushkin, Alexander
Publikováno v:
Phys. Rev. C 90, 025209 (2014)
We consider radiative corrections to polarization observables in elastic electron-proton scattering, in particular, for the polarization transfer measurements of the proton form factor ratio $\mu G_E/G_M$. The corrections are of two types: two-photon
Externí odkaz:
http://arxiv.org/abs/1405.2467
Autor:
Borisyuk, Dmitry, Kobushkin, Alexander
Publikováno v:
Phys. Rev. C 89, 025204 (2014)
We consider two-photon exchange (TPE) in the elastic electron-proton scattering and evaluate the effect of \pi N (pion + nucleon) intermediate hadronic states. Among different \pi N states, we concentrate on the P33 channel; thus we effectively inclu
Externí odkaz:
http://arxiv.org/abs/1306.4951
Autor:
Borisyuk, Dmitry, Kobushkin, Alexander
TPEcalc is a C++ program for calculation of two-photon exchange (TPE) amplitudes in elastic electron-hadron scattering, based on the dispersion method. It is a command-line tool which accepts kinematical parameters (Q^2 and epsilon) as input and retu
Externí odkaz:
http://arxiv.org/abs/1209.2746
Autor:
Borisyuk, Dmitry, Kobushkin, Alexander
Publikováno v:
Phys. Rev. C 86, 055204 (2012)
We consider two-photon exchange (TPE) in the elastic electron-proton scattering and study the contribution arising from the production of Delta(1232) resonance in the intermediate state. We calculate all three TPE amplitudes (generalized form factors
Externí odkaz:
http://arxiv.org/abs/1206.0155