scholarly journals High-energy behavior of photon, neutrino, and proton cross sections

2015 ◽  
Vol 92 (7) ◽  
Author(s):  
Carlos A. Argüelles ◽  
Francis Halzen ◽  
Logan Wille ◽  
Mike Kroll ◽  
Mary Hall Reno
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
High Energy Behavior ◽  
Energy Behavior

Construction of Constrained Dipole Oscillator Strength Distributions

2016 ◽  
Vol 230 (5-7) ◽  
Author(s):  
Ajit J. Thakkar
Keyword(s):  
Oscillator Strength ◽  
Cross Sections ◽  
High Energy ◽  
Strength Distribution ◽  
Sum Rule ◽  
Molar Refractivity ◽  
High Energy Behavior ◽  
Energy Behavior ◽  
Sample Application ◽  
Dipole Oscillator

AbstractA brief review is given of how a constrained dipole oscillator strength distribution (DOSD) is constructed from experimental and possibly theoretical photoabsorption cross-sections with constraints provided by molar refractivity data and the Kuhn–Reiche–Thomas sum rule. Some recent refinements including the imposition of the correct high-energy behavior on the DOSD for homoatomic molecules are discussed and extended to the general molecular case. A sample application to pyridine is given.

Investigating the impact of the partonic structure on the description of hadronic collisions at high energies

2020 ◽  
Vol 35 (22) ◽  
pp. 2050127
Author(s):  
M. Broilo ◽  
V. P. Gonçalves ◽  
P. V. R. G. Silva
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
Distribution Functions ◽  
Parton Distribution Functions ◽  
Proton Proton ◽  
High Energies ◽  
High Energy Behavior ◽  
Energy Behavior ◽  
The Impact ◽  
Hadronic Collisions

The impact of the partonic structure on the description of the hadronic cross-sections is investigated considering a multichannel eikonal model based on the Good–Walker approach. The total, elastic and single diffractive cross-sections are estimated considering different parametrizations for the parton distribution functions and the predictions are compared with the experimental data for proton–proton [Formula: see text] and antiproton–proton [Formula: see text] collisions. We show that the description of the high-energy behavior of the hadronic cross-sections is sensitive to the partonic structure.

High-Energy Behavior of Total Cross Sections

1963 ◽  
Vol 132 (6) ◽  
pp. 2724-2727 ◽  
Author(s):  
Yoichiro Nambu ◽  
Masao Sugawara
Keyword(s):  
Cross Sections ◽  
High Energy ◽  
Total Cross Sections ◽  
High Energy Behavior ◽  
Energy Behavior

Vacuum Ultraviolet Excitation of H(2p) by Electron Impact on H2

1972 ◽  
Vol 50 (18) ◽  
pp. 2211-2216 ◽  
Author(s):  
J. W. McConkey ◽  
F. G. Donaldson
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Vacuum Ultraviolet ◽  
High Energy ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Ultraviolet Excitation ◽  
A Value ◽  
High Energy Behavior ◽  
Energy Behavior

'Polarization-free' measurements are presented of the electron impact excitation of Lyman α by electron impact on H2 in the energy range 20–2000 eV. Cross sections are made absolute by normalizing to the data of Mumma and Zipf at 100 eV. A broad maximum in the function occurs around 60 eV, some 20 eV lower than was found by some previous workers. Reasons for this discrepancy are discussed. The high energy behavior of the cross section is analyzed in terms of the Bethe approximation and a value of 0.11 is obtained for the square of the dipole matrix element of the transitions involved.

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