Induced radiation by electron with anomalous magnetic moment in the field of a plane electromagnetic wave

1972 ◽  
Vol 15 (4) ◽  
pp. 491-495
Author(s):  
Yu. I. Klimenko ◽  
A. I. Khudomyasov
Keyword(s):  
Electromagnetic Wave ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Plane Electromagnetic Wave

HUNTING FOR SUPERSYMMETRY IN INTENSE ELECTROMAGNETIC FIELDS

1994 ◽  
Vol 09 (26) ◽  
pp. 4581-4600 ◽  
Author(s):  
ALEXANDER V. KURILIN
Keyword(s):  
Electromagnetic Wave ◽  
Synchrotron Radiation ◽  
External Field ◽  
Electromagnetic Fields ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Background Field ◽  
Lepton Decay ◽  
The Masses ◽  
The Impact

We calculate the probabilities of slepton and photino production via a charged lepton decay induced by an arbitrary electromagnetic wave or by a constant homogeneous external field, Fμν. This allows us to estimate the domains where this reaction could be significant. Comparing the process [Formula: see text] with the synchrotron radiation we conclude that for all values of the background field parameter [Formula: see text], with pν being the lepton’s momentum, the following estimate holds: [Formula: see text]. We also study the impact of the intense field on radiative corrections to the lepton’s anomalous magnetic moment. It is found that, when χ exceeds the cube of the masses’ ratios, [Formula: see text], [Formula: see text], the sparticle’s contribution to the anomalous magnetic moment is of the same order as the QED correction. In this region the magnitude of the anomalous magnetic moment of the lepton is very sensitive to the masses of the slepton and the photino.

scholarly journals Two and three pseudoscalar production in e+e− annihilation and their contributions to (g − 2)μ

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Wen Qin ◽  
Ling-Yun Dai ◽  
Jorge Portolés
Keyword(s):  
Experimental Data ◽  
Theoretical Prediction ◽  
Pseudoscalar Meson ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Vacuum Polarization ◽  
Meson Production ◽  
The Other ◽  
Joint Analysis ◽  
The Standard Model

Abstract A coherent study of e+e− annihilation into two (π+π−, K+K−) and three (π+π−π0, π+π−η) pseudoscalar meson production is carried out within the framework of resonance chiral theory in energy region E ≲ 2 GeV. The work of [L.Y. Dai, J. Portolés, and O. Shekhovtsova, Phys. Rev. D88 (2013) 056001] is revisited with the latest experimental data and a joint analysis of two pseudoscalar meson production. Hence, we evaluate the lowest order hadronic vacuum polarization contributions of those two and three pseudoscalar processes to the anomalous magnetic moment of the muon. We also estimate some higher-order additions led by the same hadronic vacuum polarization. Combined with the other contributions from the standard model, the theoretical prediction differs still by (21.6 ± 7.4) × 10−10 (2.9σ) from the experimental value.

scholarly journals Stochastic computation of g − 2 in QED

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Ryuichiro Kitano ◽  
Hiromasa Takaura ◽  
Shoji Hashimoto
Keyword(s):  
Perturbation Theory ◽  
Numerical Computation ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Stochastic Perturbation ◽  
Higher Order ◽  
Feynman Diagrams ◽  
Perturbative Series ◽  
Physical Quantities

Abstract We perform a numerical computation of the anomalous magnetic moment (g − 2) of the electron in QED by using the stochastic perturbation theory. Formulating QED on the lattice, we develop a method to calculate the coefficients of the perturbative series of g − 2 without the use of the Feynman diagrams. We demonstrate the feasibility of the method by performing a computation up to the α3 order and compare with the known results. This program provides us with a totally independent check of the results obtained by the Feynman diagrams and will be useful for the estimations of not-yet-calculated higher order values. This work provides an example of the application of the numerical stochastic perturbation theory to physical quantities, for which the external states have to be taken on-shell.

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