P. A. Krachkov

activity

20152026

most citedSmall-angle scattering and quasiclassical approximation beyond leading order

6 citations · 10 across the 7 of their papers we have counts for

collaborators

7 papers

hep-ph2026

Radiative correction to the charge asymmetry in $e^{+} e^{-} \to μ^{+} μ^{-}$ process

Roman E. Gerasimov, Petr A. Krachkov, Roman N. Lee

We calculate the next-to-next-to-leading order (NNLO) QED corrections to the $C$ -odd part of the differential cross section of the $e^{+} e^{-} \to μ^{+} μ^{-}$ process. This part contributes…

hep-ph2025

Electron-positron annihilation into heavy leptons at two loops

Roman E. Gerasimov, Petr A. Krachkov, Roman N. Lee

We calculate the NNLO QED corrections to the $C$ -even part of differential cross section of $e^{+} e^{-} \to μ^{+} μ^{-}$ process. We neglect power corrections in the electron mass and obtai…

hep-ph2023

$O (m α^{2} (Z α)^{6})$ contribution to Lamb shift from radiative corrections to the Wichmann-Kroll potential

Petr A. Krachkov, Roman N. Lee

We derive an analytical expression for the contribution of the order $m α^{2} (Z α)^{6}$ to the hydrogen Lamb shift which comes from the diagrams for radiative corrections to the Wichman…

hep-ph2023★ 3 cited

Two-loop corrections to Lamb shift and hyperfine splitting in hydrogen via multi-loop methods

Petr A. Krachkov, Roman N. Lee

We revisit the contributions of order $α^{2} (Z α)^{5} m$ and $α^{2} (Z α) E_{F}$ , respectively, to the Lamb shift and to the hyperfine splitting from mixed self-energy-vacuum-polarization diagr…

hep-ph2022★ 1 cited

Charge asymmetry in the spectra of bremsstrahlung and pair production

Petr A. Krachkov, Roman N. Lee

We calculate the first Coulomb correction to the spectra of two processes: the electron bremsstrahlung and electron-positron photoproduction in the Coulomb field. We show that, in…

cond-mat.mes-hall2021

To the problem of electron-hole bound state in transition-metal dichalcogenides

P. A. Krachkov, I. S. Terekhov

The interacting electron and hole in transition-metal dichalcogenides is considered. For investigation of the interaction between electron and hole we obtain the Bethe-Salpeter equ…

physics.atom-ph2015★ 6 cited

Small-angle scattering and quasiclassical approximation beyond leading order

P. A. Krachkov, R. N. Lee, A. I. Milstein

In the present paper we examine the accuracy of the quasiclassical approach on the example of small-angle electron elastic scattering. Using the quasiclassical approach, we derive…

Radiative correction to the charge asymmetry in e+e−→μ+μ− process

Electron-positron annihilation into heavy leptons at two loops

O(mα2(Zα)6) contribution to Lamb shift from radiative corrections to the Wichmann-Kroll potential

Two-loop corrections to Lamb shift and hyperfine splitting in hydrogen via multi-loop methods

Charge asymmetry in the spectra of bremsstrahlung and pair production

To the problem of electron-hole bound state in transition-metal dichalcogenides

Small-angle scattering and quasiclassical approximation beyond leading order

Radiative correction to the charge asymmetry in $e^{+} e^{-} \to μ^{+} μ^{-}$ process

$O (m α^{2} (Z α)^{6})$ contribution to Lamb shift from radiative corrections to the Wichmann-Kroll potential