Energy-energy correlations in electron-positron annihilation: Z-boson and heavy quark effects

1984 ◽  
Vol 233 (1) ◽  
pp. 161-166 ◽  
Author(s):  
Kyung Hyun Cho ◽  
Seung Kee Han ◽  
Jae Kwan Kim
Keyword(s):  
Heavy Quark ◽  
Positron Annihilation ◽  
Z Boson ◽  
Electron Positron Annihilation ◽  
Electron Positron

scholarly journals CROSS-SECTION FOR DOUBLE CHARMONIUM PRODUCTION IN ELECTRON–POSITRON ANNIHILATION AT ENERGY $\sqrt{s} = 10.6 {\rm GeV}$

2011 ◽  
Vol 20 (12) ◽  
pp. 2521-2533 ◽  
Author(s):  
ELIAS MENGESHA ◽  
SHASHANK BHATNAGAR
Keyword(s):  
Experimental Data ◽  
Heavy Quark ◽  
Positron Annihilation ◽  
Cross Section ◽  
Exclusive Process ◽  
Charmonium Production ◽  
Electron Positron Annihilation ◽  
Electron Positron ◽  
Energy Formula ◽  
The Cross

In this work we study the process e++e-→J/Ψ+ηc at energy [Formula: see text] observed recently at B-factories whose measurements were made by Babar and Belle groups. We calculate the cross-section for this process in the Bethe–Salpeter formalism under Covariant Instantaneous Anstaz. To simplify our calculation, the heavy quark approximation is employed in the quark and gluon propagators. In the exclusive process of e+e- annihilation into two heavy quarkonia, the cross-section calculated in this scenario is compatible with the experimental data of Babar and Belle.

scholarly journals Asymmetries in Processes of Electron–Positron Annihilation

Symmetry ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1132 ◽  
Author(s):  
Andrej Arbuzov ◽  
Serge Bondarenko ◽  
Lidia Kalinovskaya
Keyword(s):  
Positron Annihilation ◽  
Z Boson ◽  
Weak Coupling ◽  
Wide Energy Range ◽  
Mixing Angle ◽  
Electron Positron Annihilation ◽  
Electron Positron ◽  
Electroweak Radiative Corrections ◽  
Electroweak Mixing Angle ◽  
Wide Energy

Processes of electron–positron annihilation into a pair of fermions were considered. Forward–backward and left–right asymmetries were studied, taking into account polarization of initial and final particles. Complete 1-loop electroweak radiative corrections were included. A wide energy range including the Z boson peak and higher energies relevant for future e + e − colliders was covered. Sensitivity of observable asymmetries to the electroweak mixing angle and fermion weak coupling was discussed.

The W and Z Bosons

2019 ◽  
pp. 265-282
Author(s):  
Michael E. Peskin
Keyword(s):  
Gauge Theory ◽  
Positron Annihilation ◽  
Weak Interaction ◽  
Z Boson ◽  
Z Bosons ◽  
Theory Model ◽  
Electron Positron Annihilation ◽  
Electron Positron

This chapter describes the predictions of the gauge theory model of the weak interaction for the production and decay of the W and Z bosons, and the comparison of these predictions to experiment. It describes precision tests of the gauge theory model using electron-positron annihilation to the Z boson.

scholarly journals Calculation of the Doppler broadening of the electron-positron annihilation radiation in defect-free bulk materials

2000 ◽  
Vol 61 (15) ◽  
pp. 10092-10099 ◽  
Author(s):  
V. J. Ghosh ◽  
M. Alatalo ◽  
P. Asoka-Kumar ◽  
B. Nielsen ◽  
K. G. Lynn ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Annihilation Radiation ◽  
Doppler Broadening ◽  
Bulk Materials ◽  
Electron Positron Annihilation ◽  
Electron Positron

Experimental study of jets in electron-positron annihilation

1981 ◽  
Vol 101 (1-2) ◽  
pp. 129-134 ◽  
Author(s):  
W. Bartel ◽  
D. Cords ◽  
P. Dittmann ◽  
R. Eichler ◽  
R. Felst ◽  
...  
Keyword(s):  
Experimental Study ◽  
Positron Annihilation ◽  
Electron Positron Annihilation ◽  
Electron Positron
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