On the chemical composition of cosmic rays of highest energy

被引：14

作者：

Wilk, Grzegorz ^{[1
]}

Wlodarczyk, Zbigniew ^{[2
]}

机构：

[1] Andrzej Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

[2] Jan Kochanowski Univ Humanities & Sci, Inst Phys, PL-25406 Kielce, Poland

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2011年 / 38卷 / 08期

关键词：

INELASTICITY; DEPENDENCE;

D O I：

10.1088/0954-3899/38/8/085201

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We present arguments aiming at reconciling apparently contradictory results concerning the chemical composition of cosmic rays (CRs) of highest energy, coming recently from the Auger and HiRes collaborations. In particular, we argue that the energy dependence of the mean value and root mean square fluctuation of shower maxima distributions observed by the Auger experiment are not necessarily caused by the change of the nuclear composition of primary CRs. They could also be caused by the change of distribution of the first interaction point in the cascade. A new observable, in which this influence is strongly suppressed, is proposed and tested.

引用

页数：9

共 18 条

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