How Should We Modify the High Energy Interaction Models ?

Дата и время публикации : 2002-10-08T18:26:03Z

Авторы публикации и институты :
A. D. Erlykin
A. W. Wolfendale

Оригинал статьи :

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Коментарии к статье: 4 pages, 3 figures, talk presented at XII International Symposium on Very High Energy Cosmic Ray Interactions, CERN, Geneva, 15-19 July 2002, to be published in Nucl.Phys.B (Proc. Suppl.)
Первичная категория: hep-ph

Все категории : hep-ph, astro-ph

Краткий обзор статьи: An analysis has been made of the present situation with respect to the high energy hadron-nucleus and nucleus-nucleus interaction models as applied to cosmic rays. As is already known, there are inconsistencies in the interpretation of experimental data on the primary mass composition, which appear when different EAS components are used for the analyses, even for the same experiment. In the absence of obvious experimental defects, there is a clear need for an improvement to the existing models; we argue that the most promising way is to enlist two effects which should be present in nucleus- nucleus collisions but have not been allowed for before. These are: a few percent energy transfer into the EAS electromagnetic component due to electron- positron pair production or electromagnetic radiation of the quark-gluon plasma and a small slow-down of the cascading process in its initial stages associated with the extended lifetime of excited nuclear fragments. The latter process displaces the shower maximum deeper into the atmosphere.

Category: Physics