Interference effects in the Schwinger pair-production mechanism

1991 ◽  
Vol 43 (1) ◽  
pp. 250-257 ◽  
Author(s):  
A. B. Balantekin ◽  
S. H. Fricke
2016 ◽  
Vol 8 (5) ◽  
pp. 10
Author(s):  
Ogaba Philip Obande

<p class="1Body">Light is investigated with simple harmonic motion formalism; the procedure reveals the photon’s physical characteristics but fails to provide its exact identity. Its speed identifies with angular velocity, i.e., c = w<sub>pho</sub> s<sup>-1</sup> = 2.99792458 x 10<sup>8</sup> rad s<sup>-1</sup>, its velocity v<sub>pho</sub> = πc and radius r<sub>pho</sub> = π m. In other words, it is a non-matter energy packet which radiates at a characteristic radio frequency 0-<sub>pho</sub> = 47.71345 MHz and <sub class="1Body">pho</sub> = 2π m. Although the wavelength corresponds to λ values of wave (bosonic) forms of Cd and In, the quantum mass does not register with an element of the chemical periodicity. Notably, its rest mass is well above the electron’s and raises mass conservation issues with the pair production mechanism γ + γ ↔ e<sup>+</sup> + e<sup>−</sup>. The evidence reveals that no natural e-m radiation oscillates above ϑ ~7 x 10<sup>9</sup> s<sup>-1</sup>; microcosmic particulate “dark” matter is identified with α- emitters, therefore, detectable. The result also suggests redefinition of the mass-energy equivalence formulation in terms of velocity rather than speed. Implications of these findings for Relativity and Cosmology are highlighted.</p>


2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Ilja Doršner ◽  
Svjetlana Fajfer ◽  
Ajla Lejlić

Abstract We introduce a novel mechanism for the leptoquark pair production at LHC that is of a t-channel topology and is quark-quark initiated. This mechanism operates under fairly general conditions. One of them is that the two leptoquarks in question couple to the same lepton and the other one is that the fermion numbers of these two leptoquarks differ by two. The strength of the proposed mechanism provides an alternative way to the conventional processes to efficiently constrain the parameter space of the two leptoquark scenarios at LHC whenever the aforementioned conditions are met. We accordingly present one case study to outline the physics potential of this novel production mechanism.


2021 ◽  
Vol 81 (4) ◽  
Author(s):  
Biswaranjan Das ◽  
Stefano Moretti ◽  
Shoaib Munir ◽  
Poulose Poulose

AbstractNew physics frameworks like the next-to-minimal supersymmetric standard Model and the Next-to-2-Higgs-doublet Model contain three neutral CP-even Higgs bosons. It is possible for the heavier two of these states to have masses identical to each other, which can result in a sizeable quantum interference between their propagators in processes they mediate. For both these models, we study the impact of such interference on the pair-production of the lightest of the three scalars, which we identify with the observed 125 GeV Higgs boson, in the gluon-fusion channel at the large hadron collider (LHC). We find that the inclusion of these effects can substantially alter the cross section, compared to its value when they are ignored, for this process. Our results illustrate the importance of taking possible quantum interference effects into account not only when investigating the phenomenology of extended Higgs sectors at the future Run(s) of the LHC, but also when imposing its current exclusion bounds on the parameter spaces of these models.


2014 ◽  
Vol 2014 (7) ◽  
Author(s):  
D. Barducci ◽  
A. Belyaev ◽  
J. Blamey ◽  
S. Moretti ◽  
L. Panizzi ◽  
...  

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