Recent Developments in Perturbative QCD

1990 ◽  
pp. 251-306
Author(s):  
Z. Kunszt
Keyword(s):  
Perturbative Qcd ◽  
Recent Developments

scholarly journals A Short Review on Recent Developments in TMD Factorization and Implementation

2019 ◽  
Vol 2019 ◽  
pp. 1-17 ◽  
Author(s):  
Ignazio Scimemi
Keyword(s):  
Transverse Momentum ◽  
Perturbative Qcd ◽  
Short Review ◽  
Transverse Momentum Dependent ◽  
Recent Developments

In the latest years the theoretical and phenomenological advances in the factorization of several collider processes using the transverse momentum dependent distributions (TMD) have greatly increased. I attempt here a short resume of the newest developments discussing also the most recent perturbative QCD calculations. The work is not strictly directed to experts in the field and it wants to offer an overview of the tools and concepts which are behind the TMD factorization and evolution. I consider both theoretical and phenomenological aspects, some of which have still to be fully explored. It is expected that actual colliders and the Electron Ion Collider (EIC) will provide important information in this respect.

scholarly journals Perturbative QCD at High Temperature

1997 ◽  
Vol 12 (08) ◽  
pp. 1431-1464 ◽  
Author(s):  
Agustin Nieto
Keyword(s):  
Field Theory ◽  
Free Energy ◽  
Perturbation Theory ◽  
High Temperature ◽  
Perturbative Qcd ◽  
Effective Field Theory ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Effective Field ◽  
Recent Developments

Recent developments of perturbation theory at finite temperature based on effective field theory methods are reviewed. These methods allow the contributions from the different scales to be separated and the perturbative series to be reorganized. The construction of the effective field theory is shown in detail for ϕ4 theory and QCD. It is applied to the evaluation of the free energy of QCD at order g5 and the calculation of the g6 term is outlined. Implications for the application of perturbative QCD to the quark–gluon plasma are also discussed.

Applications of higher-order QCD

2014 ◽  
Vol 29 (27) ◽  
pp. 1430061
Author(s):  
Stefan Höche
Keyword(s):  
Perturbative Qcd ◽  
Particle Physics ◽  
Higher Order ◽  
Recent Developments

In this paper we summarize some recent developments in perturbative QCD and their application to particle physics phenomenology.

scholarly journals DEVELOPMENTS IN PERTURBATIVE QCD

2006 ◽  
Vol 21 (08n09) ◽  
pp. 1778-1791 ◽  
Author(s):  
GAVIN P. SALAM
Keyword(s):  
Monte Carlo ◽  
Perturbative Qcd ◽  
Monte Carlo Event ◽  
The Status ◽  
Recent Developments ◽  
Small X ◽  
Fixed Order

A brief review of key recent developments and ongoing projects in perturbative QCD theory, with emphasis on conceptual advances that have the potential for impact on LHC studies. Topics covered include: twistors and new recursive calculational techniques; automation of one-loop predictions; developments concerning NNLO calculations; the status of Monte Carlo event generators and progress in matching to fixed order; analytical resummation including the push to NNLL, automation and gap between jets processes; and progress in the understanding of saturation at small x.

scholarly journals PARTON DISTRIBUTIONS

2004 ◽  
Vol 19 (07) ◽  
pp. 1074-1088 ◽  
Author(s):  
R. S. THORNE
Keyword(s):  
Perturbative Qcd ◽  
Theoretical Framework ◽  
Current Understanding ◽  
Data Sets ◽  
Parton Distributions ◽  
Recent Developments ◽  
The Impact ◽  
Physical Quantities ◽  
The Way

I discuss our current understanding of parton distributions. I begin with the underlying theoretical framework, and the way in which different data sets constrain different partons, highlighting recent developments. The methods of examining the uncertainties on the distributions and those physical quantities dependent on them is analyzed. Finally I look at the evidence that additional theoretical corrections beyond NLO perturbative QCD may be necessary, what type of corrections are indicated and the impact these may have on the uncertainties.

scholarly journals Applications of higher order QCD

2014 ◽  
Vol 31 ◽  
pp. 1460281
Author(s):  
Stefan Höche
Keyword(s):  
Perturbative Qcd ◽  
Particle Physics ◽  
Higher Order ◽  
Recent Developments

In this talk we summarize some recent developments in perturbative QCD and their application to particle physics phenomenology.

Trends in Electron Energy Loss Spectroscopy

1977 ◽  
Vol 35 ◽  
pp. 228-229
Author(s):  
C. Colliex ◽  
P. Trebbia
Keyword(s):  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Materials Science ◽  
Analytical Technique ◽  
Recent Developments ◽  
Quantitative Results ◽  
Electron Microscopes ◽  
Electron Energy Loss ◽  
Primary Electrons

The physical foundations for the use of electron energy loss spectroscopy towards analytical purposes, seem now rather well established and have been extensively discussed through recent publications. In this brief review we intend only to mention most recent developments in this field, which became available to our knowledge. We derive also some lines of discussion to define more clearly the limits of this analytical technique in materials science problems.The spectral information carried in both low ( 0<ΔE<100eV ) and high ( >100eV ) energy regions of the loss spectrum, is capable to provide quantitative results. Spectrometers have therefore been designed to work with all kinds of electron microscopes and to cover large energy ranges for the detection of inelastically scattered electrons (for instance the L-edge of molybdenum at 2500eV has been measured by van Zuylen with primary electrons of 80 kV). It is rather easy to fix a post-specimen magnetic optics on a STEM, but Crewe has recently underlined that great care should be devoted to optimize the collecting power and the energy resolution of the whole system.

Filaments and membranes in the mitotic apparatus

1983 ◽  
Vol 41 ◽  
pp. 544-547
Author(s):  
Kent McDonald
Keyword(s):  
Intermediate Filaments ◽  
Mitotic Spindle ◽  
Mitotic Apparatus ◽  
Light Microscope Level ◽  
Microtubule Associated Proteins ◽  
Recent Developments ◽  
Associated Proteins ◽  
Force Generator ◽  
Spindle Function ◽  
Antibody Technology

At the light microscope level the recent developments and interest in antibody technology have permitted the localization of certain non-microtubule proteins within the mitotic spindle, e.g., calmodulin, actin, intermediate filaments, protein kinases and various microtubule associated proteins. Also, the use of fluorescent probes like chlorotetracycline suggest the presence of membranes in the spindle. Localization of non-microtubule structures in the spindle at the EM level has been less rewarding. Some mitosis researchers, e.g., Rarer, have maintained that actin is involved in mitosis movements though the bulk of evidence argues against this interpretation. Others suggest that a microtrabecular network such as found in chromatophore granule movement might be a possible force generator but there is little evidence for or against this view. At the level of regulation of spindle function, Harris and more recently Hepler have argued for the importance of studying spindle membranes. Hepler also believes that membranes might play a structural or mechanical role in moving chromosomes.

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