Basic Features of High-Energy Hadronic Interactions

2014 ◽  
pp. 1-47
Author(s):  
Carlos Merino ◽  
Yuli M. Shabelski
Keyword(s):  
High Energy ◽  
Hadronic Interactions ◽  
Basic Features

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 Calibrating the In-Medium Behavior of Quarkonia

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Helmut Satz
Keyword(s):  
High Energy ◽  
Heavy Flavor ◽  
Nuclear Collisions ◽  
Quarkonium Production ◽  
Essential Question ◽  
Model Independent ◽  
Production Pattern ◽  
Basic Features

Quarkonium production has been considered as a tool to study the medium formed in high-energy nuclear collisions, assuming that the formation of a hot and dense environment modifies the production pattern observed in elementary collisions. The basic features measured there are the relative fractions of hidden to open heavy flavor and the relative fractions of the different hidden heavy flavor states. Hence the essential question is if and how these quantities are modified in nuclear collisions. We show how the relevant data must be calibrated; that is, what reference has to be used, in order to determine this in a model-independent way.

scholarly journals Average shape of longitudinal shower profiles measured at the Pierre Auger Observatory

2019 ◽  
Vol 210 ◽  
pp. 02015
Author(s):  
Sofia Andringa ◽  
Keyword(s):  
Cosmic Ray ◽  
High Energy ◽  
Pierre Auger Observatory ◽  
Composition Analysis ◽  
Shape Parameters ◽  
Hadronic Interactions ◽  
Shower Development ◽  
Shower Maximum ◽  
Detailed Composition ◽  
First Time

The average profiles of cosmic ray shower development as a function of atmospheric depth are measured for the first time with the Fluorescence Detectors at the Pierre Auger Observatory. The profile shapes are well reproduced by the Gaisser-Hillas parametrization at the 1% level in a 500 g/cm2 interval around the shower maximum, for cosmic rays with log(E/eV) > 17.8. The results are quantified with two shape parameters, measured as a function of energy. The average profiles carry information on the primary cosmic ray and its high energy hadronic interactions. The shape parameters predicted by the commonly used models are compatible with the measured ones within experimental uncertainties. Those uncertainties are dominated by systematics which, at present, prevent a detailed composition analysis.

Chaos in compound hadrons in high-energy hadronic interactions

2010 ◽  
Vol 81 (5) ◽  
pp. 055101 ◽  
Author(s):  
Dipak Ghosh ◽  
Argha Deb ◽  
Sitaram Pal ◽  
Mitali Mondal
Keyword(s):  
High Energy ◽  
Hadronic Interactions

scholarly journals Extensive Air Showers and Hadronic Interactions at High Energy

2011 ◽  
Vol 61 (1) ◽  
pp. 467-489 ◽  
Author(s):  
Ralph Engel ◽  
Dieter Heck ◽  
Tanguy Pierog
Keyword(s):  
High Energy ◽  
Extensive Air Showers ◽  
Air Showers ◽  
Hadronic Interactions
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