The understanding of Cosmic Rays (CRs) origin at any energy is made difficult by the poor knowledge of the elemental composition of the radiation. Inclined showers (θ > 60◦) induced by very high-energy CRs are mainly produced by secondary muons, in contrast to the vertical ones dominated by photons and electrons stemming from π0 decays. Measurements of the CRs rate at different zenith angles give information on the relative number of muons in a shower, which is dependent on the CR elemental composition, thus providing an important tool to probe the CR mass distribution but also the hadronic interaction models. In this paper a study of the non-attenuated shower component at a zenith angle θ > 60◦, through the observation of the so-called horizontal air showers by the ARGO-YBJ experiment, is presented. More than 107 well-contained horizontal events have been analyzed to study the production and interaction of high energy CR muons and neutrinos.
Observation of horizontal air showers with ARGO-YBJ / Sciascio, G. D. I.; Panico, B.. - 2013-:(2013). (Intervento presentato al convegno 33rd International Cosmic Rays Conference, ICRC 2013 tenutosi a bra nel 2013).
Observation of horizontal air showers with ARGO-YBJ
Panico B.
2013
Abstract
The understanding of Cosmic Rays (CRs) origin at any energy is made difficult by the poor knowledge of the elemental composition of the radiation. Inclined showers (θ > 60◦) induced by very high-energy CRs are mainly produced by secondary muons, in contrast to the vertical ones dominated by photons and electrons stemming from π0 decays. Measurements of the CRs rate at different zenith angles give information on the relative number of muons in a shower, which is dependent on the CR elemental composition, thus providing an important tool to probe the CR mass distribution but also the hadronic interaction models. In this paper a study of the non-attenuated shower component at a zenith angle θ > 60◦, through the observation of the so-called horizontal air showers by the ARGO-YBJ experiment, is presented. More than 107 well-contained horizontal events have been analyzed to study the production and interaction of high energy CR muons and neutrinos.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
