Comment on comparison of theory and experiment for pair-production cross sections near threshold

1981 ◽  
Vol 24 (2) ◽  
pp. 1127-1128 ◽  
Author(s):  
H. K. Tseng ◽  
R. H. Pratt
Keyword(s):  
Pair Production ◽  
Cross Sections ◽  
Production Cross ◽  
Theory And Experiment ◽  
Near Threshold

Near-threshold behavior of pair-production cross sections in a lead target

1985 ◽  
Vol 32 (5) ◽  
pp. 2622-2627 ◽  
Author(s):  
F. T. Avignone ◽  
W. C. Barker ◽  
H. S. Miley ◽  
H. A. O’Brien ◽  
F. J. Steinkruger ◽  
...  
Keyword(s):  
Pair Production ◽  
Cross Sections ◽  
Production Cross ◽  
Lead Target ◽  
Threshold Behavior ◽  
Near Threshold

scholarly journals Top quark studies with the ATLAS detector

2015 ◽  
Vol 39 ◽  
pp. 1560092
Author(s):  
Marcella Capua
Keyword(s):  
Pair Production ◽  
Cross Sections ◽  
Top Quark ◽  
W Boson ◽  
Production Cross ◽  
Charge Asymmetry ◽  
Atlas Detector ◽  
Top Quark Production ◽  
Top Pair Production ◽  
8 Tev

The latest top quark studies in proton-proton collisions at a centre-of-mass energy of 7 and 8 TeV with the ATLAS detector are reported. We present recent results on the top pair production inclusive cross-sections, top pair production differential cross-section in the resolved and boosted regimes, single top-quark production cross-sections measured in the t-channel, s-channel and W-boson associated processes, as well as the determination of the CKM matrix element [Formula: see text]. The results are compared with theoretical expectations. Latest ATLAS results on top properties will be also shown in terms of direct and pole mass, spin correlations and charge asymmetry.

scholarly journals An Analytic Distorted Wave Approximation for Electropion and Photopion Production on 12C near Threshold

1986 ◽  
Vol 39 (2) ◽  
pp. 203 ◽  
Author(s):  
F Di Marzio ◽  
K Amos
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Distorted Wave ◽  
Pion Scattering ◽  
Wave Approximation ◽  
Microscopic Models ◽  
Transition Densities ◽  
Analyse Data ◽  
Near Threshold

An analytic distorted wave approximation (ADWA) that can be used to analyse photopion and electropion production cross sections is developed. An application is made to analyse data from 12C near threshold once the approximation scheme is established as a realistic replacement for the more usual, distorted wavefunctions given by the optical model for low energy pion scattering. The pion production data analyses made using a generalized Helm model for the transition densities clearly demonstrates the significant role of distortion effects and that the ADW A is a good and simple representation of these effects. Repeating the analyses using microscopic models of nuclear structure indicates inadequacies in those structure specifications.

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