scholarly journals Charged scalar particles andτleptonic decay

1993 ◽  
Vol 48 (7) ◽  
pp. 3221-3224 ◽  
Author(s):  
Zhijian Tao
Keyword(s):  
Charged Scalar ◽  
Scalar Particles

scholarly journals THE LIENARD–WIECHERT POTENTIAL OF CHARGED SCALAR PARTICLES AND THEIR RELATION TO SCALAR ELECTRODYNAMICS IN THE REST-FRAME INSTANT FORM

1998 ◽  
Vol 13 (16) ◽  
pp. 2791-2831 ◽  
Author(s):  
DAVID ALBA ◽  
LUCA LUSANNA
Keyword(s):  
Electromagnetic Field ◽  
Dirac Equation ◽  
Rest Frame ◽  
Coulomb Gauge ◽  
Charged Scalar ◽  
Scalar Particles ◽  
Field System ◽  
Instant Form ◽  
Hamilton Equations ◽  
New Type

After a summary of a recently proposed new type of instant form of dynamics (the Wigner-covariant rest-frame instant form), the reduced Hamilton equations in the covariant rest-frame Coulomb gauge for the isolated system of N scalar particles with pseudoclassical Grassmann-valued electric charges plus the electromagnetic field are studied. The Lienard–Wiechert potentials of the particles are evaluated and it is shown how the causality problems of the Abraham–Lorentz–Dirac equation are solved at the pseudoclassical level. Then, the covariant rest-frame description of scalar electrodynamics is given. Applying to it the Feshbach–Villars formalism, the connection with the particle plus electromagnetic field system is found.

scholarly journals One-loop Form Factors for \(H\rightarrow \gamma^*\gamma^*\) in \(R_{\xi}\) Gauge

2021 ◽  
Vol 32 ◽  
Author(s):  
Khiem Hong Phan ◽  
Dzung Tri Tran
Keyword(s):  
Standard Model ◽  
Form Factors ◽  
Numerical Results ◽  
Good Stability ◽  
Charged Scalar ◽  
Scalar Particles ◽  
Standard Models ◽  
Loop Form

In this paper, we present general one-loop form factors for \(H\rightarrow \gamma^* \gamma^*\) in \(R_{\xi}\) gauge, considering all cases of two on-shell, one on-shell and two off-shell for final photons. The calculations are performed in standard model and in arbitrary beyond the standard models which charged scalar particles may be exchanged in one-loop diagrams. Analytic results for the form factors are shown in general forms which are expressed in terms of the Passarino-Veltman functions. We also confirm the results in previous computations which are available for the case of two on-shell photons. The \(\xi\)-independent of the result is also discussed. We find that numerical results are good stability with varying \(\xi=0,1\) and $\xi\rightarrow \infty\).

scholarly journals A New Analytical Method for Self-Force Regularization. I: -- Charged Scalar Particles in Schwarzschild Spacetime --

2004 ◽  
Vol 111 (6) ◽  
pp. 821-840 ◽  
Author(s):  
W. Hikida ◽  
S. Jhingan ◽  
H. Nakano ◽  
N. Sago ◽  
M. Sasaki ◽  
...  
Keyword(s):  
Analytical Method ◽  
Schwarzschild Spacetime ◽  
Charged Scalar ◽  
Scalar Particles ◽  
Self Force

scholarly journals The N- and 1-Time Classical Descriptions of N-Body Relativistic Kinematics and the Electromagnetic Interaction

1997 ◽  
Vol 12 (04) ◽  
pp. 645-722 ◽  
Author(s):  
Luca Lusanna
Keyword(s):  
Electromagnetic Field ◽  
Hamiltonian Formulation ◽  
Covariant Formulation ◽  
Coulomb Interactions ◽  
Charged Scalar ◽  
Scalar Particles ◽  
Dimensional Phase Space ◽  
Spacelike Hypersurfaces ◽  
Klein Gordon ◽  
Time Description

Given N relativistic scalar free particles described by N mass-shell first class constraints in their 8N-dimensional phase space, their N-time description is obtained by means of a series of canonical transformations to a quasi-Shanmugadhasan basis adapted to the constraints. Then the same system is reformulated on spacelike hypersurfaces: the restriction to the family of hyperplanes orthogonal to the total timelike momentum gives rise to a covariant intrinsic 1-time formulation called the "rest-frame instant form" of dynamics. The relation between the N- and 1-time descriptions, the mass spectrum of the system and the way to introduce mutual interactions among the particles are studied. Then the 1-time description of the isolated system of N charged scalar particles plus the electromagnetic field is obtained. The use of Grassmann variables to describe the charges together with the determination of the field and particle Dirac observables leads to a formulation without infinite self-energies and with mutual Coulomb interactions extracted from classical electromagnetic field theory. A comparison with the Feshbach–Villars Hamiltonian formulation of the Klein–Gordon equation is made. Finally a 1-time covariant formulation of relativistic statistical mechanics is found.

A search for charged scalar particles pair produced in e+e− annihilation

1982 ◽  
Vol 114 (2-3) ◽  
pp. 211-216 ◽  
Author(s):  
W. Bartel ◽  
D. Cords ◽  
P. Dittmann ◽  
R. Eichler ◽  
R. Felst ◽  
...  
Keyword(s):  
Charged Scalar ◽  
Scalar Particles

Soliton Quantization and the Dyon Decay

1997 ◽  
Vol 12 (06) ◽  
pp. 1125-1132
Author(s):  
Bum-Hoon Lee
Keyword(s):  
Stationary Point ◽  
Charged Particles ◽  
Charged Scalar ◽  
Point Configuration ◽  
Scalar Particles ◽  
Charge Space ◽  
Light Charged Particles ◽  
Internal Charge

We sketch the method of describing the decay of the dyon. The perturbation of fields around the classical dyon configuration which corresponds to the true stationary point configuration for the rotating state of the monopole in the internal charge space can describe the decay of the unstable dyons emitting light charged particles. We show this through the explicit simple and interesting model that allows BPS dyons and light charged scalar particles.

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