Results 71 to 80 of about 8,742,018 (356)

Bound–Free and Free–Free Pair Production Channels in Forward Delbrück Scattering

Atoms
We present a theoretical study of forward-angle Delbrück scattering of light by the Coulomb field of a target nucleus. Special attention is paid to the Coulomb corrections, which take into account the interaction of the emerging virtual electron–positron
Jonas Sommerfeldt, Vladimir A. Yerokhin, Andrey Surzhykov   +2 more
doaj   +1 more source

The effect of nonlinear quantum electrodynamics on relativistic transparency and laser absorption in ultra-relativistic plasmas

New Journal of Physics, 2015
With the aid of large-scale three-dimensional quantum electrodynamics (QED)-particle-in-cell simulations, we describe a potential experimental configuration to measure collective effects that couple strong field QED to plasma kinetics and develop a ...
Peng Zhang, C P Ridgers, A G R Thomas
doaj   +1 more source

Diffractive charged meson pair production

, 1999
We investigate the possibility to measure the nonforward gluon distribution function by means of diffractively produced \pi^+\pi^- and K^+K^- pairs in polarized lepton nucleon scattering.
Lehmann-Dronke, B., Maul, M., Schaefer, S., Schäfer, A., Stein, E.   +4 more
core   +2 more sources

Effects of Synchrotron Cooling and Pair Production on Collisionless Relativistic Reconnection [PDF]

Astrophysical Journal, 2018
High-energy radiation from nonthermal particles accelerated in relativistic magnetic reconnection is thought to be important in many astrophysical systems, ranging from blazar jets and black hole accretion disk coronae to pulsars and magnetar flares. The
H. Hakobyan, A. Philippov, A. Spitkovsky
semanticscholar   +1 more source

Semiclassical analysis of axion-assisted and axion-driven pair production

Journal of High Energy Physics, 2022
We study the pair production of fermions in a time dependent axion background with and without an electric background. We construct the adiabatic mode functions which incorporate the gauge field and the axion velocity dependence of the dispersion ...
Hiroyuki Kitamoto, Masaki Yamada
doaj   +1 more source

Exlusive charmed meson pair production

, 2004
The experimental data of BELLE Collaboration on the exclusive charmed meson pair production in the process of monophotonic $e^+e^-$-annihilation ($e^+e^-\to \gamma^* \to D\bar D$) has been studied.
A. G. Grozin, A. K. Likhoded, A. V. Berezhnoy, A. V. Berezhnoy, A. V. Berezhnoy, C.-R. Ji, M. S. Baek, S. J. Brodsky, V. V. Kiselev   +8 more
core   +1 more source

Estados estacionários de partículas sem spin em potenciais quadrados

Revista Brasileira de Ensino de Física
A equação de Klein-Gordon em uma dimensão espacial é investigada com a mais geral estrutura de Lorentz para os potenciais externos. A análise e o cálculo dos coeficientes de reflexão e transmissão para o espalhamento de partículas em um potencial ...
Tatiana R. Cardoso, Antonio S. de Castro
doaj   +1 more source

Magnetically-enhanced open string pair production

Journal of High Energy Physics, 2017
We consider the stringy interaction between two parallel stacks of D3 branes placed at a separation. Each stack of D3 branes in a similar fashion carry an electric flux and a magnetic flux with the two sharing no common field strength index.
J.X. Lu
doaj   +1 more source

Entropy in Black Hole Pair Production [PDF]

, 1993
Pair production of Reissner-Nordstrom black holes in a magnetic field can be described by a euclidean instanton. It is shown that the instanton amplitude contains an explicit factor of $e^{A/4}$, where $A$ is the area of the event horizon.
Andrew Strominger, D. Brill, D. Garfinkle, David Garfinkle, F. J. Ernst, G. W. Gibbons, G. W. Gibbons, I. K. Affleck, I. K. Affleck, J. A. Harvey, J. D. Bekenstein, J. D. Bekenstein, K. Lee, K. Lee, M. A. Melvin, M. Srednicki, R. M. Wald, S. B. Giddings, S. B. Giddings, S. B. Giddings, S. B. Giddings, S. W. Hawking, Steven B. Giddings, T. Banks, T. Banks   +24 more
core   +2 more sources

$e^+e^-$ Pair Production from 10 GeV to 10 ZeV

, 2004
At very high energies, pair production ($\gamma\to e^+e^-$) exhibits many interesting features. The momentum transfer from the target is very small, so the reaction probes the macroscopic properties of the target, rather than individual nuclei ...
Abreu, Adams, Alscher, Anderson, Anderson, Anthony, Anthony, Anthony, Astbury, Baier, Baier, Baier, Baltz, Baur, Baur, Baur, Baur, Baurichter, Bethe, Bethe, Bethe, Blandford, Blankenbecler, Bosted, Brodsky, Budnev, Buskulic, Cahalan, Derrickson, Eickmeyer, Engel, Erber, Feinberg, Fowler, Galitsky, Hansen, Hayashii, Kasahara, Klein, Lee, Lee, Lohrmann, Migdal, Moore, Nagano, Palazzi, Petradza, Robl, Rossi, Shulga, Spencer R. Klein, Stanev, Stanev, Sørensen, Ternovskii, Tsai, Vane, Vane, Vankov, Varfolomeev, Zakharov   +60 more
core   +3 more sources