Search of centauro like events

Details Search of centauro like events Search of centauro like events

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001icrc....4.1537a&link_type=abstract

Proceedings of the 27th International Cosmic Ray Conference. 07-15 August, 2001. Hamburg, Germany. Under the auspices of the Int

Physics

Scientific paper

Since 1971, Brazil-Japan Chacaltaya Emulsion Chamber Experiment is observing unusual events interpreted as Multiple Hadron Production without π0 events. As previously reported, these events are characterized by high hadron content and no π0 production at the interaction. Two of the five Centauro events have their interaction point determined through microscope measurements in the films of the emulsion chamber exposed at Mount Chacaltaya (5,220 m of altitude). In spite of the fact that exists other Centauro candidates, in this paper we present analysis on the beforehand mentioned 5 events because all have showers observed at both upper and lower chamber exposed at Chacaltaya and the total showers energy in the range (200-300)TeV. The comparison was done with 285 events through acceptance analysis of similar to the 5 selected Centauro events, using their physical quantities like: total energy (ΣEshowers), multiplicity (nshowers), emission angle related quantity (rshowers) and so on. It results that only 3 other events are comparable with Centauro events but neither of them has high hadron content. Sideways we compared with 9,360 computer simulated events and the result is only 1 compatible, in terms of the same used observables, with the 5 Centauro events.

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