Low and high energy asymptotic behavior of electroweak corrections in polarized e–e+ → μ–μ+ process

2018 ◽  
Vol 96 (4) ◽  
pp. 445-453
Author(s):  
A.G. Aleksejevs ◽  
S.G. Barkanova ◽  
Yu. M. Bystritskiy ◽  
V.A. Zykunov
Keyword(s):  
High Energy ◽  
Radiative Corrections ◽  
Polarized Electrons ◽  
Computational Approaches ◽  
Asymptotic Expressions ◽  
Electroweak Radiative Corrections ◽  
Recent Developments ◽  
Ultra Precision ◽  
Belle Ii ◽  
Good Agreement

Electroweak radiative corrections will play a major role in the analysis of several upcoming ultra-precision experiments, such as Belle-II, so it is crucial to make sure that they are fully under control. This article outlines the recent developments in the theoretical and computational approaches to one-loop (NLO) electroweak radiative corrections to the parity-violating asymmetry in e–e+ → μ–μ+(γ) process with longitudinally polarized electrons. We derive asymptotic expressions for low and high energy regions (well below or above Z-resonance, correspondingly) and analyze the leading contributions. For most energy regions, our results are in good agreement with precise computer-algebra-based calculation and can be used as a quicker alternative.

$e^+e^-\gamma$ production at photon-photon colliders at complete electroweak NLO accuracy

2021 ◽  
Author(s):  
He-Yi Li ◽  
Ren-You Zhang ◽  
Wen-Gan Ma ◽  
Yi Jiang ◽  
Xiao-Zhou Li
Keyword(s):  
Total Cross Section ◽  
Cross Section ◽  
Linear Collider ◽  
Experimental Studies ◽  
High Energy ◽  
Radiative Corrections ◽  
High Energy Gamma ◽  
Electroweak Radiative Corrections ◽  
Energy Gamma ◽  
Beam Luminosity

Abstract We present the full NLO electroweak radiative corrections to $e^+e^-\gamma$ production in $\gamma\gamma$ collision, which is an ideal channel for calibrating the beam luminosity of Photon Linear Collider. We analyse the dependence of the total cross section on the beam colliding energy, and investigate the kinematic distributions of final particles at various initial photon beam polarizations at EW NLO accuracy. The numerical results show that the EW relative corrections to the total cross section are non-negligible and become more and more significant as the increase of the beam colliding energy, even can exceed $-10\%$ in $\text{J} = 2$ $\gamma\gamma$ collision at $\sqrt{\hat{s}}=1~ \text{TeV}$. Such EW corrections are very important and should be taken into consideration in precision theoretical and experimental studies at high-energy $\gamma\gamma$ colliders.

scholarly journals One-Loop Electroweak Radiative Corrections to Bhabha Scattering in the Belle II Experiment

2020 ◽  
Vol 51 (4) ◽  
pp. 645-650
Author(s):  
A. G. Aleksejevs ◽  
S. G. Barkanova ◽  
Yu. M. Bystritskiy ◽  
V. A. Zykunov
Keyword(s):  
Radiative Corrections ◽  
Bhabha Scattering ◽  
Electroweak Radiative Corrections ◽  
Belle Ii

Electroweak Radiative Corrections to High Energy  e Scatterings

1981 ◽  
Vol 65 (3) ◽  
pp. 1001-1025 ◽  
Author(s):  
K.-i. Aoki ◽  
Z. Hioki ◽  
R. Kawabe ◽  
M. Konuma ◽  
T. Muta
Keyword(s):  
High Energy ◽  
Radiative Corrections ◽  
Electroweak Radiative Corrections

scholarly journals NLO electroweak radiative corrections for four-fermionic process at Belle II

2017 ◽  
Vol 138 ◽  
pp. 06001 ◽  
Author(s):  
Aleksandrs Aleksejevs ◽  
Svetlana Barkanova ◽  
Vladimir Zykunov
Keyword(s):  
Radiative Corrections ◽  
Electroweak Radiative Corrections ◽  
Belle Ii

scholarly journals PARITY VIOLATING ASYMMETRIES AT FUTURE LEPTON COLLIDERS

1998 ◽  
Vol 13 (14) ◽  
pp. 2235-2244 ◽  
Author(s):  
ANDRZEJ CZARNECKI ◽  
WILLIAM J. MARCIANO
Keyword(s):  
Short Distance ◽  
High Energy ◽  
Precision Measurements ◽  
Radiative Corrections ◽  
Polarized Beams ◽  
Electroweak Radiative Corrections ◽  
Lepton Colliders

Parity violating left–right scattering asymmetries at future high energy e+e- and e-e- colliders are examined. The utility of two polarized beams for precision measurements is pointed out. Sensitivity to "new" short–distance physics is briefly discussed. Electroweak radiative corrections due to the running of sin 2θW·(q2) are exhibited.

scholarly journals The Growth of Semiconductor Thin Films Studied by RHEED

1990 ◽  
Vol 43 (5) ◽  
pp. 583
Author(s):  
GL Price
Keyword(s):  
Thin Films ◽  
Surface Science ◽  
High Vacuum ◽  
High Energy ◽  
Ultra High Vacuum ◽  
Large Area ◽  
Growth Modes ◽  
Semiconductor Thin Films ◽  
Wide Range ◽  
Recent Developments

Recent developments in the growth of semiconductor thin films are reviewed. The emphasis is on growth by molecular beam epitaxy (MBE). Results obtained by reflection high energy electron diffraction (RHEED) are employed to describe the different kinds of growth processes and the types of materials which can be constructed. MBE is routinely capable of heterostructure growth to atomic precision with a wide range of materials including III-V, IV, II-VI semiconductors, metals, ceramics such as high Tc materials and organics. As the growth proceeds in ultra high vacuum, MBE can take advantage of surface science techniques such as Auger, RHEED and SIMS. RHEED is the essential in-situ probe since the final crystal quality is strongly dependent on the surface reconstruction during growth. RHEED can also be used to calibrate the growth rate, monitor growth kinetics, and distinguish between various growth modes. A major new area is lattice mismatched growth where attempts are being made to construct heterostructures between materials of different lattice constants such as GaAs on Si. Also described are the new techniques of migration enhanced epitaxy and tilted superlattice growth. Finally some comments are given On the means of preparing large area, thin samples for analysis by other techniques from MBE grown films using capping, etching and liftoff.

scholarly journals Towards the Hydrogen Economy—A Review of the Parameters That Influence the Efficiency of Alkaline Water Electrolyzers

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3193
Author(s):  
Ana L. Santos ◽  
Maria-João Cebola ◽  
Diogo M. F. Santos
Keyword(s):  
Energy Content ◽  
Water Electrolysis ◽  
High Energy ◽  
Operating Conditions ◽  
Energy Sources ◽  
Alkaline Water Electrolysis ◽  
Alkaline Water ◽  
New Energy ◽  
Recent Developments ◽  
Cell Components

Environmental issues make the quest for better and cleaner energy sources a priority. Worldwide, researchers and companies are continuously working on this matter, taking one of two approaches: either finding new energy sources or improving the efficiency of existing ones. Hydrogen is a well-known energy carrier due to its high energy content, but a somewhat elusive one for being a gas with low molecular weight. This review examines the current electrolysis processes for obtaining hydrogen, with an emphasis on alkaline water electrolysis. This process is far from being new, but research shows that there is still plenty of room for improvement. The efficiency of an electrolyzer mainly relates to the overpotential and resistances in the cell. This work shows that the path to better electrolyzer efficiency is through the optimization of the cell components and operating conditions. Following a brief introduction to the thermodynamics and kinetics of water electrolysis, the most recent developments on several parameters (e.g., electrocatalysts, electrolyte composition, separator, interelectrode distance) are highlighted.

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