Monte Carlo Calculations Applied to a Determination of Four-Momentum Transfer in Ultra-High Energy Interactions

1964 ◽  
Vol 135 (1B) ◽  
pp. B153-B160
Author(s):  
R. D. Settles
Keyword(s):  
Monte Carlo ◽  
Momentum Transfer ◽  
High Energy ◽  
Ultra High Energy ◽  
Monte Carlo Calculations

scholarly journals High energy cosmic ray interactions and UHECR composition problem

2019 ◽  
Vol 210 ◽  
pp. 02001
Author(s):  
Sergey Ostapchenko
Keyword(s):  
Experimental Data ◽  
Monte Carlo ◽  
Cosmic Rays ◽  
Cosmic Ray ◽  
High Energy ◽  
Ultra High Energy ◽  
Hadronic Interactions ◽  
High Energy Cosmic Rays ◽  
Cosmic Ray Interactions ◽  
Composition Problem

The differences between contemporary Monte Carlo generators of high energy hadronic interactions are discussed and their impact on the interpretation of experimental data on ultra-high energy cosmic rays (UHECRs) is studied. Key directions for further model improvements are outlined. The prospect for a coherent interpretation of the data in terms of the UHECR composition is investigated.

scholarly journals Monte Carlo Calculations of High-Energy Nucleon-Meson Cascades and Comparison with Experiment

1972 ◽  
Vol 49 (1) ◽  
pp. 82-92 ◽  
Author(s):  
T. W. Armstrong ◽  
R. G. Alsmiller ◽  
K. C. Chandler ◽  
B. L. Bishop
Keyword(s):  
Monte Carlo ◽  
High Energy ◽  
Monte Carlo Calculations ◽  
Comparison With Experiment

scholarly journals Measurements of UHECR Mass Composition by Telescope Array

2019 ◽  
Vol 210 ◽  
pp. 01008
Author(s):  
William Hanlon
Keyword(s):  
Monte Carlo ◽  
Cosmic Ray ◽  
High Energy ◽  
Mass Composition ◽  
Ultra High Energy ◽  
Fluorescence Detector ◽  
Telescope Array ◽  
Second Moments ◽  
Systematic Uncertainties ◽  
Surface Detector

Telescope Array (TA) has recently published results of nearly nine years of Xmax observations providing its highest statistics measurement of ultra high energy cosmic ray (UHECR) mass composition to date for energies exceeding 1018.2 eV. This analysis measured agreement of observed data with results expected for four different single elements. Instead of relying only on the first and second moments of Xmax distributions, we employ a morphological test of agreement between data and Monte Carlo to allow for systematic uncertainties in data and in current UHECR hadronic models. Results of this latest analysis and implications of UHECR composition observed by TA are presented. TA can utilize different analysis methods to understand composition as both a crosscheck on results and as a tool to understand systematics affecting Xmax measurements. The different analysis efforts utilizing fluorescence detector stereo, surface detector and fluorescence detector hybrid, and surface detector-only, currently underway at TA performed to understand composition are also discussed.

Monte Carlo Calculations on Models for High Energy Atomic Reactions

1964 ◽  
Vol 2 (4) ◽  
Author(s):  
F. S. Rowland ◽  
P. Coulter
Keyword(s):  
Monte Carlo ◽  
Kinetic Theory ◽  
Energy Loss ◽  
Free Parameter ◽  
Monte Carlo Calculation ◽  
High Energy ◽  
Maximum Energy ◽  
Isotropic Model ◽  
Monte Carlo Calculations

SummaryA Monte Carlo calculation has been performed to evaluate the yields expected from the kinetic theory of hot atom reactions for various combinations of parameters. The calculations here have been performed for the elastic, isotropic model and for an isotropic, pseudoelastic model in which the maximum energy loss is treated as a free parameter. The total hot yield,

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